It was a pretty surreal movie about a restraunt, in color. Probably not made in the u.s. I think I saw it in the ’90s, definately in an art movie theater. Also I think someone gets eaten. The most telling portion of the movie is this blonde kid singing “Wash me…” in an amazingly high voice.
I don’t remember the exact words “wash me,” but sounds like The Cook, the Thief, His Wife and Her Lover.
It is.