[You didn't answer her question...]

Okay, okay, okay... Gotcha. I'm seeeerious now. ...Maybe we got kidnapped while we were sleeping...

[She suddenly snaps her fingers and gasps.] Maybe that woman kidnapped us! ...Maybe that's why she was calling herself our mom - because she wanted a set of cute twins! She wanted us to be her children, Dipper!

[Mabel, what...what are you even talking about.]