The sex position in which both you and your partner are hanging from the ceiling, while still doing the nasty.
"Hey dude ya know Luc?"
"Yeah"
"He totally did the Upside-Down Sea Turtle with that Thelma girl"
"Aww nice thats awesome!"
"Yeah"
"He totally did the Upside-Down Sea Turtle with that Thelma girl"
"Aww nice thats awesome!"
by tboner1939 May 8, 2010
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