where there is a lot of cum involved during sexual activity.
my god lisa that was a massive cumfest we just had!
by Jakey-G July 27, 2005
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where lots of cum (sperm) is involved in a sexual activity
my god me and daniel have a lot of wanks togeter and spunk alot eg cumfest lol
by tim raine September 6, 2005
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as the name implies, it's a festival where you cum and dry your your boys (your cum sack aka your nut sack) to the point of being a desert where sperm and other cum beings live till they die of thirst or hunger for cum and some people (that will not be named) has went far and beyond to dry their sacks and many died from dry sack
your friend: Hey are you going to the Cumfest

you: yeah i,m going
your friend: that's good, could we go now

you: yeah lets go!
your mom: don't get to dry honey!
you: I won't mom!
by Mcjuggernut69 November 30, 2020
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