When you lean a girls head off the end of the bed in order to open up her esophagus and you furiously enter and exit your penis.
Kelly: "So Rachel, did you finally give Jerry a blowjob?"
Rachel: "Blowjobs are for the weak, Rachel. I let Jerry do the Upside Down Mouth Pound on me."
Kelly: "That seems like it would hurt!"
Rachel: "It's not that bad since it opens up my esophagus."
Rachel: "Blowjobs are for the weak, Rachel. I let Jerry do the Upside Down Mouth Pound on me."
Kelly: "That seems like it would hurt!"
Rachel: "It's not that bad since it opens up my esophagus."
by greenpineapple7 May 05, 2014
The act of laying on one's back, while having both legs in the air (usually supported by a chair or wall), and masturbating on to one's own face.
We were hanging out at the party when all of a sudden, Spiro decided to give himself a pineapple upside down cake. He had way too much to drink.
by dawgtopper September 08, 2011
A girl will put her macbook case on upside down as a sign of being dtf. The apple on the case will face the opposite direction of the apple that lights up so that the two look like they're 69-ing. Bitch be horny.
Guy: Dude, do you think she's in to me?
Friend: Yeah, man. She's got an upside down macbook case on her laptop. Totally dtf. Go mack, bro.
Guy: I think you mean mac!
*High-five*
Friend: Yeah, man. She's got an upside down macbook case on her laptop. Totally dtf. Go mack, bro.
Guy: I think you mean mac!
*High-five*
by geniusbar_player October 26, 2011
by nympho123 June 16, 2010
index finger, ring finger and pinky finger pointing towards the ground, resulting in one in the pink, two in the stink or one in the jelly, two in the smelly.
Tonia was attempting to be cool for a facebook photo by throwing up dueces, but instead threw an upside-down reverse shocker with a sexy pucker!
by gmmagnet November 24, 2010
Sex position including one male and one female partner. The male holds the female upside-down and sideways between his legs (creating almost a scissor-like leg position) and proceeds to jump up and down while simultaneously jamming his raging boner into either her anal or vaginal crease. The result is a massive jizzbomb, hence the name.
Man, can you believe Peggy let Bill do the Upside-Down Jumping Jizzbomb to her at the Christmas exchange? I heard they even let people photograph them. I don't blame them, that is one challenging move!
by WussGoodWitIT January 22, 2011
by DR. DISTRUCTO June 24, 2011