[loggedinmyphone]

There's a joke about a guy who gets a phone call because his son used "the S-word" at school. "I'm so sorry, I don't know where he picked that up; I'll have a stern talk with him." "Good," the teacher says, "we can't have children calling each other 'stupid' here."

"Wait, stupid? Ok I thought..."

"And another thing, he called Susie the B-word." "Really? I've always taught him to be respectful to women." "Well, I heard him say 'bozo' with my own ears."

"Oh, that B-word... Well, if there's nothing else..."

"In fact there is, I hate to say this but your son also used the M-word." "Hrm, yes, and what do you mean by the M-word?"

Here the teller is invited to concoct the most utterly obscene, vile, and ridiculous phrase imaginable, suitably taboo and vivid to evoke surprised involuntary laughter in the audience (I like to start with "mouth-breathing", delivered with nervousness and ill-concealed delight).