The girl is upside down with her head hanging off the bed/couch and she is giving the boy a blowjob. When he cums she keeps it in her mouth and proceeds to spray it all over his body, hence the topping on the cake.
Boy1: dude, why are you all sticky?
Boy2: girlfriend tried something new, the upside down pineapple cake!
Boy1: you need to end that relationship asap.
Boy2: girlfriend tried something new, the upside down pineapple cake!
Boy1: you need to end that relationship asap.
by angelD2010 March 8, 2009
 Get the upside down pineapple cakemug.
Get the upside down pineapple cakemug. by THe king of cunt November 9, 2009
 Get the Skinning A Dingo Upside Downmug.
Get the Skinning A Dingo Upside Downmug. Tom - "That chick is god awful ugly bro!"
Jake - "Yeah, she's got like...backflip upside down syndrome!"
Jake - "Yeah, she's got like...backflip upside down syndrome!"
by dczech October 18, 2008
 Get the Backflip Upside Down Syndromemug.
Get the Backflip Upside Down Syndromemug. its like the game you would play as a kid: wheelbarrow races. when the guy stands upright and the girl would be the wheelbarrow but with this position, she is facing him and they would fuck just like that.
"...yea i was the gardener and she was the wheelbarrow but i got to see her face as i fucked her because we did the upside down wheelbarrow position."
by PinkBunnyLove July 29, 2009
 Get the upside down wheelbarrowmug.
Get the upside down wheelbarrowmug. The act of a regular fist bump, yet the fist is upside-down. This kind of fist bump is a rejection of the purpose of the fist bump, yet must be done for the purpose to fit in.
Ted: Dude, I just totally busted that wimp in the face
Victim's Friend: Oh, yeah man
Ted: (Requests a fist bump)
Victim's Friend: (Uses an Upside-Down Fist Bump)
Victim's Friend: Oh, yeah man
Ted: (Requests a fist bump)
Victim's Friend: (Uses an Upside-Down Fist Bump)
by LexxiFoxxx June 8, 2011
 Get the Upside-down Fist Bumpmug.
Get the Upside-down Fist Bumpmug. Down for butt stuff
by Kelsodilla January 30, 2016
 Get the upside down smiley facemug.
Get the upside down smiley facemug. Upside down smiley face is when a girl upside down doing oral and gets a ticklish feeling on her nose from a mans gentelia, thensmiles which brings that forward.
by Helpmecreatethenewlingo January 18, 2016
 Get the upside down smiley facemug.
Get the upside down smiley facemug.