A girl that has had sex with 2 or more of your friends.

If the girl has had sex with 3 or more of your friends she is considered a slippery otter stuck in an oil spill.
me: wow kate slept with both of us this week, what a slippery otter!
friend: she also slept with max last week. that slippery otter is stuck in an oil spill, and i don't think that grease is coming off for a while.

origin: santa cruz california
by TDW 45 October 26, 2010
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To "Drown the Slippery Otter" is to have sex for the first time, preferably with an attractive partner. The term was coined from the TV show, "Clone High."
"Have you seen that girl's ass!? It's built like the space shuttle! Oh this could be your only chance to drown the slippery otter!" -Clone High
by Y'all Mind If I March 17, 2017
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