IN the dictionary

pee (one's) pants

  1. Literally, to urinate while still wearing one's clothing.

I need you to pull over the car right now, or else I'm going to pee my pants!

poop (one's) pants

  1. Literally, to defecate while still wearing one's pants.

I need you to pull over the car right now, or else I'm going to poop my pants!

I think these 2 idioms are not grammatical though people use them.

I also hear a lot of people say ""to poop / pee on one's pants""

Eg: my mom just pooped on her pants while working she is around 60 years old

"to poop / pee one's pants" or "to poop / pee on one's pants" which one is more common?

  • 1
    You would never say "on". You might possibly say "in". – Daniel Roseman Nov 24 '19 at 11:34
  • why down votes? make no sense – Tom Nov 24 '19 at 14:44
  • Older generations say: to pee in one's pants, and to poop in one's pants. This usage is colloquial and probably AmE. And definitely not on, unless one is a dog. – Lambie Dec 26 '19 at 22:05
  • @Lambie, American often says "shit oneself" idioms.thefreedictionary.com/shit+oneself, is that right? – Tom Dec 27 '19 at 2:06
  • @Tom Yes, of course, but pee/poop is not vulgar, it's acceptable. – Lambie Dec 27 '19 at 15:40

You wouldn’t say “on”, you would say “in”, as you are inside of them.

However, you’d much more commonly hear “peed his pants”.

This, I guess, is somewhat of a colloquialism (as you correctly observed), and thinking about it, what the lack of “in” or “on” really represents is that:

  1. You did not intend to pee on the thing, and doing so is expected to cause you shame or embarrassment.
  2. The thing you peed on is considered to be a part of your person, or at least an extension of your person (e.g., your pants).

Another example you’d hear is:

Peed himself.

We could imagine “pee”, in this particular context, defined as:

verb to cover in urine

  • Not sure why you got a down vote. It be nice if someone could chime in. Anyway, it might be worth noting that "to poop/pee on one's pants" is valid, but means something different. – Em. Nov 25 '19 at 5:49
  • +1 Sure, it is said in AmE, but my objection to the expression is due to its grammatical ambiguity. I would say: to pee/poop in one's pants, as poop his pants, sounds like: He pooped gold coins. OR He peed blood. If you get my drift. – – Lambie Dec 27 '19 at 15:40

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