FMBNR 

Fuck Mad Bitches No Rubbers, meaning hell yes to those who fuck mad bitches without using rubbers.

Eric-"You wanna go get wid some fuckin skanks?"
Donald-"FMBNR"

FMBNR by d mite November 23, 2007

FBNRL 

Funny But Not Really Laughing, an abbreviation created by Dr. Heinz Doofenshmirtz from the television show Phineas and Ferb
A replacement for LOL when you find something funny but not enough to laugh.

A:Why did the dinsouraur cross the road
B:Because chickens haven't evoled yet
B:FBNRL

FBNRL by MonkiMan March 14, 2013

FBNR 

FUCK BITCHES NO RUBBERS

essentially an acronym that encourages fornication with relatively unknown members of the opposite sex without any form of contraception.

While it may appear somewhat immature, and extremely hazardous to one's health (contingent on sexual preferences), it reflects an impartial attitude only to be had by college kids who cannot afford condoms.

Dan: " dude i totally railed like 3 girls last night, i forgot my codoms at home but whatever"

Matt:" yeahhh *nods head* FBNR"

FBNR by Aberhood111 February 16, 2009

FMBerdo 

FMBerdo is that one caring species of bird that is always there to hear you out, but also gets assaulted by their dog on a daily basis

There FMBerdo goes again, poor birds nits are being crushed by the dog!

FMBerdo by Ardddie March 22, 2021