Cartman Residence, Butters and Cartman appear out of nowhere.

Cartman: Whew! Okay, let's go tell my younger self about the book and get the hell outta here!

Butters: Yeah, lets! [Cartman knocks on his door again, Liane opens the door]

Liane: {Surprised} Eric? What are you doing here?

Cartman: I'm not Eric, I'm John [looks at himself] Shit, I'm not wearing the suit!

Liane: Ohohoh! Sorry, It's just that you two just look so alike!

Cartman: I know, do you know where I can find Eric?

Liane: Um, he's at school hon

Cartman: What?

Liane: He's at school

Cartman: ...What time is it?
Liane: 8:30, why?

Cartman: Wait a minute! [turns around with Butters]

Butters: Eric, is there something wrong?

Cartman: Yeah, when I typed in the date to go back in time, I typed only a few minutes after we got zapped back by Dr Mephesto!

Butters: Uh oh!

Cartman: Um, nice to see you mam! I'm gonna go talk to your boy right now! [Cartman and Butters leave]

South Park Bus Stop, The boys are there, Past Cartman is talking about his future self's visit to the others.

Cartman: And so then, he left in a flash of blue laght!

Kyle: ...Cartman… That is the most unbelievable story I have ever heard!

Cartman: {Annoyed} Oh come on you guys! As if your story about my story about that dream I had about Aliens wasn't unbelievable!

Stan: Dude, we saw an 80-foot satellite dish sprout out of your asshole! [Present Cartman comes dressed in tweed, Butters is also dressed in a jacket and hat]

Present Cartman: Hey Cartman!

Past Cartman: Huh?!

Kenny: What the hell?

Kyle: Dude! Get out of here!

Past Cartman: You guys! that's my future self!

Present Cartman: What future self?

Past Cartman: Wha? Aye! Don't deny it! You're my future self!

Present Cartman: Eric, I need to talk to you for a second! [whispers to his past self for a few seconds]

Past Cartman: Oh! [they proceed waiting for the bus] Okay, actually, that's not really my future self!

Kyle: See? We told you you were making it up!

Present Cartman: Oh shut up you guys, as if your story about his story of Aliens wasn't unbelievable! [the other boys are dumbfounded]

Kenny: What the fuck?