Verb: to motorboat someone's ball sac as though it were a woman's cleavage. Scrotorboating is not exclusive to the nuts, and can even include said activity on someone's taint.
by FeralBuddy October 13, 2011
Noun; the erect penis when used mainly for taunting, especially when rubbed against ticklish anatomy including armpits, ear lobes and genitalia
by FeralBuddy October 14, 2011