Is it unusual to like scat and a teenage age?

In this lifetime nothing is unusual. Now if you were speaking of scat in terms of defecation and such, then yes in any lifetime it is considered unusual, sick, and quite bizarre. But to be a teenager who likes scat the form of singing jibberish, it is all right. I myself like it and always have. You are just rich in jazz culture and taste. If you are talented enough to sing scat, then by all means go for it.