piss oneself

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piss oneself (third-person singular simple present pisses oneself, present participle pissing oneself, simple past and past participle pissed oneself)

1. (slang, vulgar, literally) To wet oneself.
2. (slang, vulgar, figuratively) To be very scared (to the extent that one might lose control of one's bladder).
3. (slang, vulgar, figuratively) To laugh uncontrollably (to the extent that one might lose control of one's bladder).

• (wet oneself):

  (standard terms): wet oneself, pee oneself, wet one's pants/trousers

  (vulgar slang terms) piss one's pants/trousers

• (be very scared):

  (standard terms): be petrified, be terrified, wet oneself

  (vulgar slang terms): shit bricks, shit oneself, brick oneself, brick it

• (laugh uncontrollably):

  (non-vulgar slang terms): be in stitches, die laughing, roll in the aisles, split one's sides, wet oneself

  (vulgar slang terms): piss one's pants/trousers