The act of rubbing one's mustache against another man's mustache, preferably while dressed as The Village People.
"Dude, i'm not going to shave for a month so we can have sweet caterpillar battles."
"Let me go get my leather biker cap, i'm going to battle the shit out of your caterpillar."
When a person sticks ones finger into an ungroomed anal cavity resulting in a digit that resembles in an adolescent caterpillar
I was intoxicated and stumble upon a homeless guys butthole and in result i came home with caterpillar finger.
when two people have intercourse in a sand box . One man slaps the lady in the face after ejaculating leaving a sandy imprint on the womens face.
Oh jane wipe that sandy caterpillar off your face.
Putting a caterpillar egg in your urethra, when you see it start to crawl out masturbate until you cum out the caterpillar
I tried to Missouri caterpillar last week but it died inside
When a penis is erect and it moves without you moving your body
When the gang bangers woke up they all had wriggling caterpillars
A strip of soft hair grown above the upper lip of an adolescent man, growth similar that to a moustache, but resembles that of a hairy caterpillar balancing on the upper lip.
Look at his little moustache, it looks more like a Caterpillar Balancing on his top lip.