opium. probably a reference to Alice In Wonderland. users become caterpillars crawling to the pipe. eventually they go into their cocoon and seldom leave their room. in time they become butterflies and fly to heaven.
When your girlfriend is mad at you so she takes all the blankets and systematically wraps herself up like a caterpillar. This, preventing you from having any blankets... so you have have to sleep in the cold.
Man: I can’t come into work today because I got a cold.
A term used to describe the way marijuana looks after it is unwrapped when you screw up rolling a joint. The marijuana without the paper, ends up looking like a green caterpillar.
Lindsay- "Oh Manny, you fucked up the joint, re-roll it!"
Manny- "damn you're right (as manny unwraps the joint)"
Andy- "Dude, that bud looks like a caterpillar now!"
Lindsay- "Yeah! like a caterpillar in its Cocoon!"