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a sex position for the more adverntrous. The man hangs the woman upside down and inserts into her. She should giggle and smile like a baby while she swings upside down being pleasured. Origninates from south east peru and makes it 12 times more likeley to consieve. The upside down happy baby should be used with caution as many have died from head traumas.
Boy: dude did you try the "upsidedown happy baby." lasy night?
other boy: nah man it was too risky she was too tall and would have got hurt.

Girl: Shall we try the "upsidedown happy baby."?
Boy: yer it gives the best orgasms.
by Vom Duck May 27, 2011
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