Why not just go all the way with it? Dye unboiled eggs and throw them at the in-laws periodically as the urge to swear strikes. To top off the bunny suit, you could wear a large top hat and carry a pocket watch. While throwing the eggs scream, "I'm late you silly f*cks! I'm f*ckin' LATE! The rabbit died too! Hahahahahahahahahaha!!!!!!"