What is Rusty Muffler?
1.
Feces left around the anus. The situation one finds oneself in when, having defecated, one finds that there is no toilet paper available.
I had a crap this morning, but there wasn't any bumwad, so I had to go all day with a rusty muffler.
2.
what my dad says after fucking my mom in the ass
damn kid, your mom sure does have a rusty muffler
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3.
Used as a code word over the phone when talking about marijuana cigarettes, joints, reefers, doobies, chongers, etc., etc....
Hey man do you got any rusty mufflers?
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