The act of thumping, with the thumb and middle finger, an adult male in the testicles. (derives from the term goose (to poke with a finger in the butt, and pecker (referencing the area of anatomy being struck))
Man, did you see those guys give there buddy a Chinese goosepecker? His nuts are going to bruised and swollen.
A person who licks geese for a living. Average income: $2,440,682,648,607.05 per hour. Licking geese is known to have some of the sameside effects as heroine.