Top Definition
Semi-poon is used to describe what a retarded teenager would refer to as having a girl let him eat her out. It is synonymous with cunnilingus, and when referred to as "semi-poon", sounds much more intriguing than it actually is meant to sound.
JC: Guys, you won't believe this. Last night, I got semi-poon.

Guys: ...what the fuck is semi-poon?

JC: Well, you know...my girlfriend let me eat her out.

Guys: Oh. Um.....cool, I guess.
by 2muchdutch August 10, 2010

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