piss one's pants

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piss one's pants (third-person singular simple present pisses one's pants, present participle pissing one's pants, simple past and past participle pissed one's pants)

1. (informal, vulgar) To wet oneself; to urinate in one's own clothes while they are being worn.
2. (informal, vulgar, idiomatic) To laugh uncontrollably.
3. (informal, vulgar, idiomatic) To be extremely frightened.

   Synonym: shit one's pants

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