On Wednesday, Marc Andreessen criticized investor Carl Icahn for his method of activism. Icahn responded Thursday.
"I'm no great fan of Andreessen ... I tried to listen to him but he talks in a high squeaky voice and, you know, when he talks you can't really hear him in my opinion," Icahn said on CNBC's "Fast Money: Halftime Report."
Read MoreMarc Andreessen: Icahn's like 'evil Captain Kirk'
Icahn also said Andreessen represents the bad side of the tech industry, saying that "it's sort of a known fact" that he has "screwed more people than Casanova."
The activist investor accused Andreessen of having stolen Skype from eBay.
