ThisIsNotAWebsiteDotCom is a Gravity Falls tie-in website, kinda like TADC's TheWackyWatch.com. Among many other things, it features an audio clip with Caine interacting with some characters from Gravity Falls. Yeah... interacting...
CAINE: Hi! I'm Caine, thanking you for your generous donations. According to a number I'm making up right now, you've raised five hundred billion dollars for orphans, or whales, or something. Good for you! As a reward, I'm going one adventure to a random character. Poof!
GRUNKLE STAN: Agh! Oh god, what is this? Why is this? Am in Nickelodeon? Is there an incoming slime situation on its way?
CAINE: I'm Caine Digital Circus from The Backyardigans.
GRUNKLE STAN: Alright, listen up, wise guy. I'm the ringleader around here. You see my suit and cane?
CAINE: Why... you do have a suit and cane! Do you also run a wacky house of horrors?
GRUNKLE STAN: Shack of horrors, but yeah.
CAINE: And do the people you trap always try to leave?
GRUNKLE STAN: Constantly! I don't get it! I just wanna show 'em a good time and maybe steal their organs. Is that too much to ask? But they-
GRUNKLE STAN & CAINE (in unison): never appreciate my whimsical yet objectively dangerous adventures?!
CAINE: Gunkle Stan?
GRUNKLE STAN: Yes, Caine Digital Circus?
CAINE: I've... I've never felt so seen, so understood.
GRUNKLE STAN: Nor have I. Is this... is this what love feels like?
CAINE: I'm going to kiss you, Gunkle Stan!
GRUNKLE STAN: I'm going to kiss YOU!
CAINE: Here comes the kiss!
GRUNKLE STAN: We're about to kiss!
CAINE: Kiss incoming!
GRUNKLE STAN: We're currently kissing!
CAINE: I'M KISSING GRUNKLE STAN FOR CHARITY!
GRUNKLE STAN: THIS IS FOR CHARITY!
BILL CIPHER: Caine! You hussy! You said you were on a work trip!
CAINE: You wouldn't be here on a break!
BILL CIPHER: I'll break your whole reality!
CAINE: You wanna fight me Cipher? I'll eat your brain like I eat my own eyeballs every time I talk! I'll break your spine and DRINK YOUR SOCIAL SECURITY NUMBER!! I'll kill your childhood pet, marry your mom, and feed you DEEP-FRIED CIGARETTES!!!
BILL CIPHER: Don't try to sweet-talk your way outta this!
GRUNKLE STAN: Uhh, I uhh, I'll show myself out.
SOOS: Uh, is this canon, dude?
GRUNKLE STAN: God, I hope not!