Charlie Sheen means business. The actor just filed a $100 million lawsuit against Warner Bros. and Chuck Lorre for firing him from his hit CBS sitcom, 'Two and a Half Men,' TMZ reports.

Sheen spoke out on the lawsuit via -- what else? -- his Guinness World Record-setting Twitter account, writing, "You corporate Trolls were warned. And now you've been served!"

After Warner Bros. gave Sheen the ax via letter earlier this week, the star told 'Access Hollywood Live' he felt the bigwigs involved were cowards.

"These guys are such yellow cockroaches that they didn't even have the decency to call me," said Sheen, indicating that he received a text with the news. "I put five bill in their cheap suit pockets. It's just deplorable."

The lawsuit, according to TMZ, is also on behalf of the 'Men' crew.