Clacking

[Jessica]

Verb. For one to swing ones [scrodum] back and forth until a sound is heard. The sound can either be high pitched like a slap, or it can be deep like your ball sack is jelly. While swinging your fellow peers encourage you to trust forward harder, propelling the sack to make an intense [clacking] noise. The person who makes the louder noise with their ball bag is the champion of [NYM]

[Oralee]

a short sharp noise made by two hard objects being hit together: