A Silkworm
A silkworm is when a guy is so broke he has to jerk off on a tree and leave a sperm stain on the bark.
My uncle is a silkworm. He jerked off on a tree and left a sperm stain on the bark.
That guy in the park is a silkworm. He jerked off on a tree and left a sperm stain on the bark.
My neighbor is a silkworm. He jerked off on a tree and left a sperm stain on the bark.