Bolt and Rhino were just watching Star Wars when Luke Skywalker appeared on screen, and it just dawned on them that Luke has a butt chin. They then flocked to 'Butt where are the cheeks at?' They got fake butt cheeks with chin straps so it looked like they were shitting out of their chins like their chins.
"I love your new butt chin!" said Bolt when they got home. Just then the Agent, the 46 nuns and Potty all busted through the door with a battering ram made of melted down Luke Skywalker action figures.
"Where did you get those radical butt chins?" exclaimed all of them in perfect harmony.
"Oh we got ours at 'Butt where are the cheeks at?'" said Bolt. And then they all pile(of poop)ed into the Butt Mobile and raced off to get their new butt chins.