(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.
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."