As this video begins, a girl does a dance with a sword set to techno music as an old lady watches. Then a boy appears and joins the girl in the dance, waving around a butterfly knife instead of sword. You quickly realize, by how synchronized their dancing is, that this whole scene was a set up, and an attempt to produce a buzzworthy video. Mission accomplished.

The dancing is great, but the stonefaced elderly woman sells the "what did I just see?" quality of the whole thing. Watch the strange dance below.

[via Viral Viral Video]