mbs

is an abbreviation meaning my bad styll

Joe: Bro you just drank the last beer.
Earl: MBS

Joe: ......

MB

mb = Maybe.

A shortening that has occurred due to lazy internet gamers not being arsed to type in 3 more letters.

Often used in conjuntion with 1337, leet, omg, wtf and other internet gamer words.

Conversation between two gamers:
1st Gamer: So did you own him?
2ndGamer: No his rail aim was uber leet :(
1st Gamer: You gonna hack his computer then?
2nd Game: mb

MB

Morning Boner, Usually when a man wakes up in the morning and has a massive erection.

Man, I've got a huge MB right now!

MBS

MBS stands for "My Bad, Sorry".

sms/msn

"Hey, why didn't you tell me SHE had a crush on me???"

"Damn I forgot; mbs."

MB

short term of masturbate

MB is the best policy

Mb

Short for my boy.

Np, mb

MB

A shorter term and usage for "My Bad"

Dude, I think you justed farted in my mouth
Oh, MB bro