Well....I've never seen them do it. I just assumed it was punk kids. It could possibly be an ex-gf or a new bf from the ex-gf. Or something like that. I wish I had a garage to park in
The super glue thing would be pretty funny, I could see it now...Wake up in the morning ready to go to work and some kid is passed out by my front tire holding onto my valve stem, drooling and snoring.