Top Definition
A friend or acquaintance who has also had sexual intercourse with the same parter that you currently have, or have had sexual intercourse with.
A: Hey, you're fucking Samantha?
B: Yes.
A: We used to be friends with benefits back in college! This makes us pump brothers!
#sex #pump brother #fuck #mutual #same partner
by November 02, 2012
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.