What is Fmb's?
1.
Shorter way to say fuck me boots.
FOS's are the opposite of this, fuck off slippers.
Look at those FMB's she's wearing.
2.
Tight, knee length (usually black) boots. Strangely, tight, knee length black boots worn by a minger will never be FMB's.
Jeez look at the FMB's in the kebab queue...
3.
Short for "Fuck-me boots" - Tall, tight leather boots on a woman.
See: Prostiboots
"Check out the FMB's on that broad. You know she wants it..."
See