Just one look at the stock of Diageo on Thursday, and Jim Cramer was salivating. Did something amazing happen that this stock has skyrocketed through the roof, up 12 percent in the last two weeks?
Diageo is the world's largest maker of hard liquor, handling such brands as Johnnie Walker, Smirnoff, Kettle One, J&B, Captain Morgan and many other recognizable names. The stock for the past year and a half has been a total dog.
"If you didn't know any better, you might have thought that Diageo's only customers were those who sipped cheap scotch on a dirty linoleum floor," the "Mad Money" host said.
But in the past two weeks, it has been upgraded by Credit Suisse, JPMorgan and RBC Capital. The RBC upgrade was so dramatic it flipped Diageo from underperform to outperform.
So how could analysts who previously hated Diageo absolutely love it? Has it invented some new product or delivered unbeatable numbers?
No. The truth is that it did absolutely nothing. The entire move was triggered solely by takeover speculation.
And while the analysts have upgraded the stock, Cramer warned that it is only because they are now evaluating Diageo as a takeover target rather than an ordinary stock.
"Maybe a deal will materialize, but if it doesn't, then you'll be left holding a very overvalued liquor company with shrinking sales and shrinking earnings," Cramer said.
As the averages were breaking market records all over the place Thursday, Cramer found the perfect recipe as to what caused the rally. It was one part benign Federal Reserve, one part declining dollar, one part possible Greece bailout and five parts skepticism and negativity.
Really, negativity led to a rally?
"I actually think there is plenty of pessimism, and that's the most crucial ingredient when you're baking a rally cake, especially when you infuse it with a worry reduction sauce that stems from a more benign news backdrop," the "Mad Money" host said. (Tweet This)
But how do you measure the amount of negativity and skepticism in the market?
First, look at traditional methods such as the tally of the bulls and the bears taken by the Investors Intelligence poll that comes out every Wednesday. Cramer was absolutely shocked to see that the index had the fewest number of bulls since October.
The second measure of pessimism stemmed from the amazing Fitbit IPO.
"I was walking around the New York Stock Exchange today, and a lot of the guys I talked to thought that this stock opened up way too high. Others told me they were anxious to short it," Cramer said.
For him, tons of pessimism in the market tells Cramer that this rally is legitimate. The combination of light at the end of the tunnels forming for the Fed, Greece and the dollar are great ingredients to the rally as well.
Read More Cramer: Have Fitbit skeptics triggered a fortune?
One stock that got Cramer's attention on Thursday was Wayfair. And while the online retailer of home goods has been a wild performer since it came public in October, it skyrocketed almost 8 percent in one session on Thursday and is up 89 percent for the year.
Wayfair sells more than 7 million products across its five brands: Wayfair.com, Joss & Main, All Modern, Dwell Studio and Birch Lane. One of the keys to its success has come from the work it has put into studying consumer behavior online and creating an easy-to-use website that lets people find exactly what they want.
Can the stock keep climbing higher? To find out, Cramer spoke with Wayfair co-founder and CEO, Niraj Shah.
"We want people to be able to find that perfect item, which they can still afford without the price getting away from them," Shah said.
Read More Cramer: No lazy boy here! This is up 89% this year
Cramer has picked up on a pattern when it comes to biotech stocks that could change the game for an investor's portfolio—listen to the darned CEO interviews.
In fact, Cramer would argue that the biotech group has gone from being hit or miss to being totally predictable just based on what the CEOs are saying on "Mad Money."
For instance, BioMarin racked up a 12 percent gain after a successful trial of a drug that combats dwarfism in children. The results of the trial triggered price target bumps from all of the research houses that follow the stock.
Cramer was shocked when he saw this. Not because of the results of the study, but the fact that these results seemed to be much of a surprise in the first place. BioMarin CEO J.J. Bienaime said many times on the show that things looked good for this test and that he was hopeful. And while his demeanor came across as understated and nonpromotional, these results should have been no surprise to anyone who watched "Mad Money."
But most importantly, when looking back at all of these CEO interviews, Cramer saw a pattern. A pattern that revealed that all of these gains are attainable for your portfolio, but require a specialized skill: Listen to the CEOs!
The CEOs are not wasting your time, Cramer's time or their own time. They are helping investors to learn about their products so you can make money—it's that easy.
Read More Cramer: Secret pattern to unlocking biotech riches
After three years of anticipation, Title IV of the 2012 JOBS Act will finally kick in on Friday. This will allow regular people to invest in privately held startups via mini-IPOs that can raise up to $50 million.
Historically, only accredited investors, some 2 percent of the population, have been able to participate in these start-ups. Now privately held companies will be able to market themselves as an investment to ordinary people.
This is a huge deal for a company like SeedInvest, which is a free online crowdfunding platform that gives investors the ability to invest in vetted start-ups. To find out what this could mean for the future of investing, Cramer spoke with SeedInvest's co-founder and CEO, Ryan Feit.
He gave investors a few pointers. "First of all, you should never invest more than 10 percent of your portfolio into private companies. And if you are going to invest in private companies, make sure you are diversified, so at least build a portfolio of 10 companies," Feit said.
In the Lightning Round, Cramer gave his take on a few caller favorite stocks:
Caterpillar: "I have to tell you, the Baltic Freight Index was up again and I like it. It's literally up about 50 percent in the last few weeks. That to me says even though Caterpillar is probably not going to have a good quarter, I don't mind owning it."
Facebook: "I think Facebook can earn $3.50 in 2017 and, doing the math in my head, that takes it to $100. A big charitable trust name."