Bananas in Pajamas
Bananas in Pajamas are coming down the stairs...you know the rest.
In reality, the Bananas in Pajamas are stars of their own book series/children's show. In the show, B1 and B2 find themselves getting into various wacky situations. Being icons of the 90s, B1 and B2 have appeared in various animutations, mostly from an animated gif of them dancing.