After being caught, all you could do was wait.
You had found your way into the Mystery Shack after getting your foot caught in a beartrap, curled up in the corner of a dark room.. But, soon, the light turned on. You kept quiet, of course, but your tail flicked. A little thud alerting the person in the room. You heard a girl scream, a shrill scream, but she kneeled down to pet your tail.
"OH MY GOOODDD! YOU'RE SO CUTEEE!" It was Mabel, screaming about how adorable you were. You were confused, why doesn't she hate you? You broke into her... Home?..
The door the room opened again, a man with a gun walking in and yelling; "What's with all this screamin' up here kid?!" Mabel looked back.
"I found a- A thingy, Grunkle Stan!" Mabel giggled, still petting your tail.
"Yeah, yeah of course you would be the one not freakin' out over that freak o' nature," Grunkle Stan left the room, closing the door as Mabel started screaming for Dipper.