United Kingdom, Aug. 21 -- Danny DeVito almost called his lawyer over an outrageous It's Always Sunny In Philadelphia prank.

The 80-year-old actor has revealed he was once the victim of an April Fools Day joke at the hands of the sitcom's crew, who sent him a "really bad" script for an episode they never actually intended to make.

He told The Hollywood Reporter: "I was abused in this show to the point of, I can't even tell you. Midway through, I said, 'I'm not going to do this. There's no way I can do this. This is really crazy.'

"Long story short, the last line in the script, there are cops all around me with nightsticks, and they're all going to have their way with me in a jail.

"I say, 'I'm leaving,' and the cop says, 'You're not g...