Seven year old acting strangely?

My seven year old son seems to be turning into an old Jewish man. For the past few days I have found him wandering around at five AM asking for a gl of seltzer, a bagel with lox, coughing and farting loudly. He has started referring to his mother as "that shiksa" and the cat as "the schwatza" (he's a black cat). When questioned about this he acts confused and says that I'm meshugginna. The kicker is today he asked when we are going to temple. I'm a Methodist and my wife is a Catholic. Is this some kind of syndrome?