Having sex as quietly as possible because there are people who could possibly hear you if you went at it the usual way.
My parents are staying in the guest bedroom next to ours so tonight we will have to have Ninja Booty.
by GassyLittleElf April 13, 2007
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Someone who has the skill to touch a girls butt or "other" areas.
I'm a booty ninja, she didn't fell me tuch her butt
by Apollo4300 February 14, 2015
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