Fan Casting The Swear Jar in Sort by Tropes

One (or more) of the characters has a particularly foul mouth, so another character decides to institute the Swear Jar so that they have to pay up every time they use rude language. Hilarity Ensues as the character who used to swear like a sailor either drop an unfathomable amount of cash into the jar or ends up having to censor everything he says. Also, expect the character who instigated the jar to end up falling foul of his own rules and having to put money in as well. May also appear as a more generic Forfeit Jar if any character is particularly prone to specific words, phrases or acts.