mustard slide

Asshole. Funniest euphemism I've ever heard. A fellow student in NCO school used it way back when.
That gay dude liked nothing better than to take it up the mustard slide!
by BobC February 07, 2006
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reverse mustard slide

Anal sex, when yellow mustard is used as the lubricant.
Sex getting boring, try a reverse mustard slide to spice things up.
by derksoda December 07, 2009
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