Weiner Brothers 

The bond two men share after they have sex with the same girl at the same time. i.e. threesome. This is a bond that can never be broken.

Last night my bro and I eiffel towered this bitch. Now we're weiner brothers. It was chill.

Weiner Brothers by MyChemicalBromance December 9, 2010

Weiner Step Brothers 

Two men who become step brothers after having anal sex with the same girl.

Bro we both explored the chocolate dungeon we're Weiner Step Brothers now!

Weiner Step Brothers by Luke2122 January 20, 2017

Wiener Brothers 

When two gentlemen have made love to the same woman on separate occasions, they are linked with an unbreakable bond and are known as Wiener Brothers.

Any form of sex (fanny, bum, mouth) will do, though the bond is that little bit tighter if both aforementioned wieners have visited the same orifice, or indeed more than one!

There is no expiration time, any duration between these sessions is allowed, though if all three parties are engaged in love making at the same time, the Wiener Twins rule comes into play.

Aaron: so you know Jeeves's new girlfriend?
Jay: Who? Chloe?
Aaron: Yeah... She and I played hide the salami a couple years ago..
Jay: Holy shit! You're wiener brothers! Mazel Tov!!!

RHYMING NAMES HAVE BEEN USED TO PROTECT THE INNOCENT

Wiener Brothers by Reiquaza August 2, 2010

Wiener Brothers 

When two men have sex with the same girl at the same time.

"Dude, me and Jim did Heather last night, can you say three way?!"

"Dude, you and Jim are wiener brothers!"

Wiener Brothers by McKickass625 December 13, 2009

Wiener Brother

When two best friends fuck each other, but aren't actually faggots.

"Hey Jim, I haven't fucked any bitches lately, wanna be wiener brothers?"

"You're a fucking faggot Steve"

Wiener Brother by Penumbra 69 November 30, 2009