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When both partners achieve orgasm at the same time. A simultaneous orgasm.

We + orgasm= wegasm
Joe and Karen finally had a wegasm last night when they were making love.
by igimaj March 11, 2011
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An orgasm caused by a large tentacle penis during an orgy with numerous virgin sluts, typically found in hentai.
Dude were you watching the yuri episode last night?

Yeah that one tentacle rapist had a wegasm mang.
by LuckyFin January 29, 2011
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