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When a girl (or guy) sticks a straw into their partner's urethra and proceeds to jerk them off until ejaculation. After ejaculation, the partner sucks the jizz through the straw.
"Dude! I made Stacy a DudeSmoothie last night!"
"Ah man! I can't believe she'd do that!"
by SlitheryLlama1 May 10, 2014
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