Reverse Upper Decker

When taking a dump with such tremendous force that it actually pushes the crap up into the tank from the bowl.
Man that Thai food packs a punch - i just had a Reverse Upper Decker in the shithouse!
by Chief Brody April 08, 2010
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reverse co-pilot

when the passenger of a car recieves oral sex from the driver while stearing the vehicle. the driver maintains operation of the gas-pedal as well as brakes.
rachel gave me a reverse co-pilot on the way back from riley's.
by headgetter May 23, 2011
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Toxic Rusty Reversal

When you put your lips to your sex partners anus, and he or she takes a fairly large fart into your mouth as you inhale, causing the taker to vomit into the partners rectum. Then the partner forces the vomit back into the mouth of the taker. Causing a chemical reaction created by the bile.
" Hey Johny, have you ever done a Toxic Rusty Reversal ,cause that shits wacked".
by Canadarocks101 July 21, 2010
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Reverse Rodeo Clown

After one realizes there is no TP in a public bathroom, they climb up on top of the sink, squat down (backwards) and splash water on their boom hole until clean.
-Dude there is no TP in here.
-Not a big deal, just pull a reverse rodeo clown. I'll be your lookout.
by highlyhumorous May 22, 2011
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Reverse 911 Bootycall

the act of one of your standard bootycalls contacting you in a panic to have sex
Jeff was surprised when Lucy showed up at his door at 245am for a frantic Reverse 911 Bootycall
by Stonecartier July 19, 2011
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Reverse Mary-Jane

A reverse mary jane is when poo is inserted into the mouth and is spat at phenominal speeds. Competitions are popular, especially in Canada.
by Jazzawoop January 05, 2012
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reverse human centipede

well unfortunately, you found this because you thought about it..... how would it even work?????
the human centipede was a messed up movie, could you imagine if someone had made a reverse human centipede where the outside persons butts are sewn together and then two people in the middle have their mouths sewn together...
by ladlemush September 03, 2017
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