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A female's state of arousal. The equivalent of a male's hard on except the girl becomes moist.
"There's Sean again. God he gives me such a gel on."
by The Strut November 10, 2004

Words related to gel on

hard on
Gel on: a phrase founded by the chav committee meaning move away from this area please
"Gel on you small bean regarder"
by Tom February 10, 2004