Top Definition
The act witnessed when a joke is so awesome that you can never complete it before starting to laugh.
No example needed, stop being retarded. Premature ejokeulation explains itself.
by Prewbaca February 02, 2008
When a film uses its best jokes in the trailer, so there's nothing funny left to watch in the film.
Steve: Did you like The Simpsons Movie?
Matt: Ah, it was alright but the funniest thing was Spider-Pig and they used it in the trailer.
Steve: Yeah, I know what you mean, I hate premature ejokeulation.
by JanuaryOrchard September 14, 2016
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