(v.) to take a dump in the toilet, close the lid and fail to flush, with the intention of making your roommates and/or house guests gag when they find it later.
"Can I use your upstairs bathroom instead? Somebody totally chorped down here."
It is hard to define chorp... one can only understand it through use and experience. It is most commonly used as a noun but can also take the form of a verb or an adjective.
"It's chorp!"
"C'est... Chorp!"
"CHORP!"
"What a chorp."
"Chorpchorpchorpchorpchorpchorpchorp."