that fat loser became so aroused watching lesbian porn that he dropped his pants in front of everyone and started making his hand cluck
the act of [masturbation], particularly masturbation so furious that the action of one's hand causes the genitals to begin making a flapping or clapping noise
"that fat loser became so aroused watching lesbian porn that he dropped his pants in front of everyone and started making his hand cluck" What is the definition of "hand cluck"?