Its the newest and most destructive of all the family members. Even if they don't got a brother they will be destroyed.
Frank: John, ur mom gay
John:I'll do it to ya
Frank:No balls you won't
John: Your brother a mother
Frank:*Turns into ash*
John:I'll do it to ya
Frank:No balls you won't
John: Your brother a mother
Frank:*Turns into ash*
by Puss slayer 889 May 11, 2018

by ARagingHomosexual May 10, 2018

This insult is very dangerous and its ten times more effective than your sister a mister
This insult was used on Stephen Hawking.
This insult was used on Stephen Hawking.
Person A: your mom gay
Person B: Your granny tranny
Person A: Your brother aint gonna be a father
*the whole universe collapses*
Person B: Your granny tranny
Person A: Your brother aint gonna be a father
*the whole universe collapses*
by ravjeeet May 13, 2018

The NEW version of 'Your Mom!'. Because everyone knows that saying is getting old. So come up with something fresher like 'Your Unborn Brother!' It's totally random and will leave your friends confused and awestruck from you witty originality.
Q: What's the answer to #9?
A: Your Unborn Brother!
Or
Q: Who's the new choir teacher?
A: Your Unborn Brother!
A: Your Unborn Brother!
Or
Q: Who's the new choir teacher?
A: Your Unborn Brother!
by H Nicole M January 13, 2009

The worst of the worst of insults. The only thing that stumps this is Your grandpap a trap. Its some heavy shit though.
by Double.xd May 14, 2018

(Mohammed is getting a bit cheecky)
"Your brother a mother"
(S.A.S arrive at your door and kill you because you are too much of a threat to mankind)
"Your brother a mother"
(S.A.S arrive at your door and kill you because you are too much of a threat to mankind)
by Yoot May 12, 2018

Carl: Your mom gay
Steve: Your dad lesbian
Carl: Pussy
Steve: Your brother a cover
Carl: „makes inzest with his cover brother“
Steve: Your dad lesbian
Carl: Pussy
Steve: Your brother a cover
Carl: „makes inzest with his cover brother“
by Urbanrusher March 21, 2018
