rusty bike chain

Eating out the ass of someone with braces than making them suck your dick and smile, showing shit stains on their teeth and braces

Guy: Suck my dirty dick!
Guy 2 sucks and smiles.
Guy: Dude, you got a rusty bike chain!

by paulada5 August 30, 2008

greasing the bike chain

Having a person who has braces blowing you than asking them to smile wide and busting the nut all over their braces.

Guy: "Smile wide, Brittany!"
Girl: "Why?"
Guy: "Cause I am going to be greasing the bike chain!"
Girl smiles.
SPLAT!!!

by paulada5 August 30, 2008

When a Girl has a STD such as syphilis or any other nasty STD. Also when a man catches a STD from a girl.

Stay away from that girl, she got that dirty bike chain.

That girl gave me a dirty bike chain.

by Jay Riv May 18, 2023

"Yo, it smells when Paul talks"
"Yeah. He got some bike chains"

by greeky81 December 1, 2017