Rumpilingus 

Eating another person's ass to provide sexual pleasure. Usually a result of a large chemical or alcohol intake that leaves you feeling so wild and horny you just wanna do EVERYTHING.

I came home from that kegger and I was so blotto I think I performed rumpilingus on my girl.

or

On prom night, we did everything shy of rumpilingus.

Rumpilingus by Nick February 9, 2005

Dumpilingus 

The act of giving oral sex to a female while she deficates (poops).

i was performing dumpilingus on my girlfriend, and something splatted on my chin!

Dumpilingus by Paul Lapointe and friends June 20, 2008

remmilingus 

Oral remmulation of the clitoris or vulva.

Last night she experienced remmilingus for the first time.

remmilingus by qoop April 6, 2006