[He takes a step back from the force of the little shove, but gladly takes his journal and nods.]

Yeah, this is a mystery just begging to be solved! I mean, weird abandoned amusement part? Creepy disembodied voice over an intercom? Having no memory of even arriving here?? [His face lights up.]

This is the case of the century, Mabel! And we're going to be the ones who solve it! [And now he's holding his fist out, for an obligatory fist bump.]

Mystery twins!