Top Definition
Noun: Sexual encounter; could possibly mean an orgy. From boink.
"What she needs is a good, healthy boink fest"-Cher Horowitz (Alicia Silverstone), "Clueless"
A sustained session of boinking. Such as a few boinks in one evening.
Tom and I had a boink-fest last eve. 5 times in one night!
by amyscat May 11, 2006
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