bunny brother 

1.
Your parent's male rabbit.

If your parents paid for it, its your bunny brother.
If you paid for it, its your bunny.
If your sibling paid for it, its your nephew-bunny.

2.
A short, convienient way to say "The bunny my parents adopted for me, but its still technically their bunny because they paid for it. I call it my bunny sometimes but my parents pay for all of her stuff. So hes like my brother except for the fact that he is a bunny."

3.
A wonderful compound word that is easy to understand even if you didn't look it up on urbandictionary.

4.
Bunny + Brother = He is a bunny and he is your brother.

My bunny brother is being a brat again. That little rascal.

bunny brother by Anna Lynn Sanders October 21, 2010

Bunny Brothers 

Two men who have slept with the same woman, but considered offensive and off-taste because the mutual broad looks like a bunny. Just like Eskimo Brothers, but more specific while pertaining to the broads facial and body features. Could also be used when the mutual broad has potato chip lips or all of the above.

Hey man, you know that one guy (i.e.) Isaac? We’re bunny brothers!

Huh? What does that mean?

We smashed the same girl, but she looks like a bunny and feels like one too with those long teeth!

Bunny Brothers by Taehxj February 11, 2021