Mtn dew sippy cup

A mtn dew sippy cup is when two people (consenting ofc) have sexual relations where one person takes a straw, sips up some mtn dew, puts the straw in the partners ass and releases the mtn dew into their ass and then proceed to let the mtn dew dribble into their mouth.

Tony: hey babe, I’ve been thinking and I wanna do try doing a mtn dew sippy cup in bed tonight
Tony’s hot babe: I mean uh sure dude wtv