Top definition
When you show up to an event expecting to meet available men/women, but everyone is much older than you anticipated. This is a unisex term that can be applied to a bunch of old men or women.
Dave: Hey Chuck, you hit Flannery's last night right? Was there any hot ass to speak of?

Chuck: Hell no! That place was a Prune Fest last night.

Dave: Sweet! I enjoy the cougar prune from time to time. Maybe I'll head up there tonight!

Chuck: No, I'm talking about 65+ year old women. Like retired and on Social Security prune!

Dave: Even better!

Chuck: I hope your dick falls off.
by -Kley- December 08, 2010
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