Have you noticed an overwhelming sense in the market that the party's over? Cramer has.
After Twitter surged 73 percent surge on its first day of trade there appears to be concern that the market has grown irrational. "Two weeks ago, Twitter would have been worth $14 billion," Cramer noted. "After the buying stampede, it's worth more than twice that."
Sometimes developments such as these turn out to be seminal moments in the stock market; something pros call 'the top.'
"It's a justifiable argument," Cramer said. "The Twitter IPO demonstrated that there's an insanity in the market. Why not cash out?"
You can even make the case that 'the top' was confirmed by the 'cult stocks', a Cramer term for stocks that are so loved they trade at extreme premiums. "Tesla and Solar City as well as Netflix and Amazon were wacked hard today," Cramer added.