Masturbation
3
I always liked the old Redd Foxx joke- "We were so poor when I was a kid in St. Louis, that if I hadn't of been a boy, I wouldn't have had nothin' to play with." When Lenny Bruce was on trial for obscenity, he wanted his lawyer to ask potential jurors whether they masturbated. If they denied it, Bruce wanted them disqualified, as that denial branded them as dishonest liars in his mind.