Girlfriend: A cheated on you with your grandpa
Me: Bruh
A response that shows disappointment whenever somebody says/does something stupid.
Joe: Why are you at your house?
Bill: Bruh.
Joe: I just ate soap, and now I'm gonna be famous.
Bill: Bruh.
I consider this to mean:
B: Brother
R: R
U: U
H: High
friend: I haven’t drank water in three days. Is that healthy?
friend 2: bruh