I have never seen moves like this from anyone, let alone a grandpop. The title of this video is "Abuelo le da la chiripiorca." "Abuelo" means grandfather, and apparently, "chiripiorca" means "guy who is spazzing out in the fashion of a silly character on a TV variety show." That's the best translation I could come up with, but my experience with Spanish-language TV means this explanation makes enough sense to me. Like Monty Python's Camelot, Spanish-language variety shows are a silly place. Not silly enough for these kids, though, who totally don't appreciate what they're getting:

Sources: h/t Digg | 24conurbo