I'm used to the PJs when I'm in a college town. The occupants are usually greasy faced, messy haired and reek of the morning after while shopping for some magical elixir and junk foods.
That said, I keep seeing PJs in airports and that's freaking me out. Unless you're a still loaded 19 year old, knock it off!
I'm surprised security didn't detain the bathrobe for questioning and an escort out.