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rude slang An initialism of "pissing/pissed myself laughing," used in online communications to indicate that one finds something extremely funny. Primarily heard in UK. LOL, DIYdaddy79, your stories are legendary! PMSL haha. A: "Did you hear about the ridiculous things Phil said during the meeting?" B: "Yeah, PMSL!"
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.