Baby Brother

Someones kid brother, whom they refer to as a baby, despite their brothers actual age.

Older Borther: "so hows my baby brother doing?!"

Younger Brother: "Shut up, im 24"

by cornandhash February 21, 2011

Baby Brother

A Tiny person that can be annoying and fun to pick on.
They sometimes hit you with golf clubs in an attempt to ask you to play.
When in a car they scream and have a loud annoying laugh while you watch a movie, which totaly ruins it.
Baby Brothers rarly are good,quiet, can talk, and dont ruin laptops with sticky hands and pop their mother so kindly gave to them.

Baby Brother :Waaaaaah!
Olderbro: In watching a movie,shh!
Babybro:(sees funny part) AHAHAHAHAHAHHEEHEHEHEHEAHEHAHEAHEAHEAHEHUEHEAEHAHEE!!!!!!
Olderbro:screw this, im nnot watching it anymore.

by Rambo1283291048 September 17, 2010

surprise baby brother

when your mom has another kid long after she should have stopped because someone forgot to use birth control.

there's me, my sister and my surprise baby brother.

by cheesemac February 18, 2010

Baby-Bird Brothers

When two guys receive a blowjob from the same girl. Similar to Eskimo Brothers, but called Baby-Bird Brothers due to the similar action a mother bird uses to feed her young.

Guy 1: "Hey I got a blowjob from Shaylyn."
Guy 2: "No fucking way, me too!"
Random bystander: "Dude, you guys are Baby-Bird Brothers!""

by Randy Rocket May 28, 2018