PAINUS: When a male penis is inserted into the female's anus.

Penis + Anus = Painus.

It's a noun and a verb.
Guy # 1: I had Painus with my girlfriend yesterday, it hurt like a bitch.

Guy # 2: Sounds like a pain in the ass.

Man: My wife and I were PAINUS-ing last night, all was going well till a gave her a hernia.

Friend: Ouch...
by The-Mountain November 10, 2011
Get the mug
Get a PAINUS mug for your fish Zora.
1) (Noun) The pain a female experiences deep in her lower back around the colon when contractions around the 40th week of pregnancy start. The contraction pain is very near the anus giving the feeling of the onset of an impending putrid and painful deuce drop that ebbs and flows with each contraction.
2) (Noun) A person who is a real "pain in the anus".

Derrivative of "pain" and "anus".
1) My God!!! Is this a contraction or do I really have to shit?! Oh wait...its gone...I must be experiencing painus.
2) Linda keeps ridin' my ass and won't quit. She'a a persistent painus!
by Tenacious Faulker July 10, 2007
Get the mug
Get a Painus mug for your mate Larisa.
pain in the anus, usually obtained when recieving your first deep butt stab from a gay associate
Man your dad gave me a killer painus last night. You gotta tell him to chill on the hard core rucus rump pumping.
by Rocco Cocko III May 08, 2010
Get the merch
Get the painus neck gaiter and mug.
When a female has so much anal sex that her anus starts coming out of her ass, it looks like a second deformed vagina.
1. Dude I gave my girlfriend painus her parents are so pissed
2. My doctor said I have analititus infectiotite. I figure it's just painus.
2. The other day I saw some chick at the beach bend over and It looked like a cameltoe but I looked closer and it was just painus.
by Smiwy May 19, 2010
Get the mug
Get a Painus mug for your friend Manafort.
Abbreviation for "Pain in the Anus"; derived from "Pain in the Ass".
X: goddam Uni is a painus

X: fukin hell your a painus, shut up already
by ChaosDogg May 29, 2005
Get the merch
Get the Painus neck gaiter and mug.