Nah, it's just a joke. Nothing in there to promote bitcoin. Actually it just seem to acknowledge the belief that bitcoins are mostly used for criminal activity online.
Maybe because it is getting popular since it hit $3000 price that time, bullying and bitcoin don't have any connections so I think it s like that. The line "give me your lunch money online" is funny, you add up the bitcoin accepting thing because it is online, makes it hilarious.
Yeah, the joke was that he's such a bully, he'd go to great lengths to get lunch money, even having to use cryptocurrency. I don't know what date this episode was aired so I don't know if it got to do with the hype.
There was a bump on AS that had all the writers favorite altcoins and I think Dogecoin was the top of the list.
What is this AS? Also, never thought their writers are into alts.
I saw this too, and mentioned it a while back. Poster is referring to Adult Swim, night time adult animation for college kids (it comes on from like 11ish to 3am ish). Goes well with pizza, pot, and the FPS of your choice.
It was hard as hell to find this, here:

Edit: found the bump!
Our Favorite Cryptocurrencies | BumpWorthy.com - adult swim bumps
http://www.bumpworthy.com/bumps/7491