When the DM leaves for 5 seconds
Cleric: I pull down my pants to show [Warlock] the scar on my butt.
Sorcerer: Yeah, [Barbarian], you have a thing for scars, right? I roll to persuade you to lick it. (Rolls a nat 20)
*DM enters to the Barbarian licking the Cleric’s ass while the Sorcerer, Warlock, and Fighter are losing their shit*
DM: I leave for 5 seconds and have to come back to this… you know what, [Cleric], make a wisdom saving throw to avoid gaining a level of madness.