What does BM means?

"Blaster Master" ,
(who also dislikes whistles) .

best master

Maybe it means bad morning

bs manufacturing aka muppets' narrative ;-P

Samay Raina has it on Cheese.com and he once said It means "Blunder Master".

bald man / bold man

@CHess-fOr-cAsh-mOneY said in #16:
> Samay Raina has it on Cheese.com and he once said It means "Blunder Master".
Cheese.com/? or chess.com

Banana's Manufacturer

Bone marrow
Bank manager
Bra muncher