Pamp

When an individual sniffs the panties of an older woman that has previously defecated in their (generally female) panties.

Me: Hey, What did you do last night?
Friend*: Idk I had a girl over last night and thing got crazy.
Me: What do you mean? Tell me the sexstory.
Friend*: Well she pegged me and then let me pamp her adult diaper after she shit in it. she had let it sit for a couple of hours.
Me: Why would you do that?
Friend*: Because she let it sit in her piss, so the smell was preserved.