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 October 20, 2008
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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 October 20, 2008
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