Gloin: Eh! What's this lad doing? Why does he think he's so funny by replacing me?
Bilbo decided a new security system was in order so his things didn't "disappear" during this party.
Or
At the Spa of Bywater
Merry: What! This is the mangers special? I was expecting something a bit more relaxing.
Or
Farmer Maggots had spent too much time with Saruman and decided to create his own hybrid, he crossed Ents with his dogs and sent them to guard his crops from hobbits that would steal his mushrooms.