Amy Schumer at the 21st Annual Critics' Choice Awards Credit: Kevin Winter/Getty Images

Not funny. Amy Schumer took to Twitter on Wednesday, January 20, to deny that she steals jokes. “On my life, I have never and would never steal a joke,” the Trainwreck actress, 34, tweeted.

It all started over the weekend, when comedians Wendy Liebman, Tammy Pescatelli and Kathleen Madigan all accused Schumer of stealing their jokes.

“Between Amy Schumer doing 1 of my best jokes on her HBO special and this meme of my joke, I’m done with social media,” Liebman reportedly tweeted and then deleted, according to screenshots obtained by Refinery 29. A montage video of the comedians has since surfaced on Vimeo, titled Amy Schumer Is a Joke Thief, and starts out with a clip of Liebman in the '90s telling a joke that seems similar to one Schumer delivered during her HBO special. 

“So maddening. You and @kathleenmadigan should talk,” comedian Chuck Martin then chimed in, generating a conversation between Liebman and Madigan, which has since been deleted.

In screenshots taken by Refinery 29, Pescatelli also weighed in, tweeting an example to an alleged rip-off. “Amy's sketch … So many more but nobody listens ... at least Cosby knocked his victims out b4 he raped them,” she wrote on Tuesday, January 19.

Schumer also defended herself during an interview with Jim Norton on Wednesday. “I wanted to come and talk to you about it and clear my name because I would never ever do that and never have,” Schumer told the SiriusXM host. “I’m literally gonna take a polygraph test and … show that I’ve never seen [those bits].”

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics, and more delivered straight to your inbox!