piss yourself

piss (oneself)

rude slang
1. Literally, to urinate while wearing one's clothing. I had to go to the bathroom so bad that I had nearly pissed myself by the time I made it home.
2. To laugh hysterically or uncontrollably. Raj's new boyfriend is hilarious. We were pissing ourselves through the whole lunch! I was pissing myself laughing at that comedy gig last night.
3. To be absolutely petrified with terror; to be scared out of one's wits. I was pissing myself when that huge burly guy started threatening me and my girlfriend.
See also: piss
Farlex Dictionary of Idioms.

ˈpiss yourself (laughing)

(British English, taboo, slang) laugh very hard: Poor Kath — she was lying on the floor and we were all pissing ourselves laughing!
See also: piss
Farlex Partner Idioms Dictionary
See also:
  • piss
  • piss (oneself)
  • pee (one's) pants
  • piss (one's) pants
  • piss on (someone or something)
  • piss on someone/something
  • bathroom
  • go to the bathroom
  • go number one
  • break the seal