The act of shaking or flapping a man's genitals until they make a clapping noise. Usually done in groups to see how loud of a clap one can get, also for bragging rights. Only done in groups after calling the requisite, "No homo."

When the “crush” has no intentions of taking things further, but they like the attention. So they flirt here or there, send dm/texts just to keep the person interested, knowing damn well they’re staying single.