piss (oneself) laughing(redirected from piss herself laughing)
piss (oneself) laughing
rude slang To laugh hysterically or uncontrollably. (Usually used in the continuous tense.) Raj's new boyfriend is hilarious. We were pissing ourselves laughing through the whole lunch!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.