Gangnam Style

"Gangnam Style" is a hit single from Korean rapper Psy, which received immense international popularity.

Elmo and Mario Lopez danced to the song on Extra, when the red one promoted the 43rd season of Sesame Street.
In the video "Can You Tell-y Me How to Get to a Billion?", Telly Monster is presented a series of links for real and faux YouTube videos. Among them is Gangnam Grannies. In the thumbnail are Mae and Grungetta, neither of whom is known to be a grandmother. (YouTube)