[Scene: Rustbucket, smoking slightly. Everything is suspiciously quiet.]
Ben: …Okay. Nobody move.
Gwen: That's usually a bad sign.
Grandpa Max: Why does it smell like melted cheese and regret?
Ben (slowly turning): Because… something went very wrong.
[Behind them: a giant, half-transformed alien creature… wearing Ben's jacket… and eating the Rustbucket's tire.]
Gwen: …Ben.
Ben: Yeah?
Gwen: Why is there a four-armed Heatblast with fur chewing our wheel?
Ben: In my defense—
I definitely didn't pick that.
Omnitrix (beeping innocently): ERROR: "Surprise Me" mode activated.
Ben: THERE'S A WHAT MODE?!
Grandpa Max: You pressed random, didn't you?
Ben: It said "mystery transformation." I thought it'd be cool!
Gwen: It's eating rubber, Ben.
Ben: Okay, yeah, that part's new.
[The creature suddenly breathes fire… but it comes out as bubbles.]
Gwen: …Did it just—
Ben: —blow bubbles? Yeah. Yeah, it did.
Grandpa Max (calmly pulling out a sandwich): I'm gonna let you handle this one.
Ben (panicking): HOW DO I HANDLE A BUBBLE-FIRE MONSTER WITH FOUR ARMS AND A SNACK ADDICTION?!
[The creature happily waves at Ben… then tries to eat his sleeve.]
Ben: HEY! That's MY jacket!
Gwen: Technically, that's also you.
Ben (freezes): …
…How did that happen?!
Omnitrix: WORKING AS INTENDED.
Ben: NO IT IS NOT.**
[The creature burps… releasing a massive bubble that floats upward… carrying the Rustbucket keys inside it.]
Gwen: …
Ben: …
Grandpa Max: …We are not telling anyone about this.
Ben (defeated): Agreed.