Top definition
When a guy says some outworldly primal shit that can only be construed as an act of machismo.
This guy was telling me of how it's his dream to die in WW3. What kind of boy brain shit is that?
by Mattricide June 12, 2019
Get a Boy brain mug for your father Vivek.
Sep 11 Word of the Day
when you're hungover as shit after a spending a night drunk as a skunk
I'm hungover as a duck let's go get some grub
by pokeythepony June 25, 2021
Get a hungover as a duck mug for your boyfriend Vivek.
2
not thinking beyond your dick or your stomach about the impact of your actions on other people
my boyfriend doesn't realize it's our anniversary today. he is suffering from boy brain.
by truthbombdropper March 07, 2014
Get a boy brain mug for your father-in-law Bob.