A fork of Rural Dictionary
Dumpster teens/teenagers are teenagers who have been disowned or they have run from home (for any reason) and live on the streets. Usually they are known to be troublesome (stereotypically)
A dumpster teen / teenager means in speech:
“Why do those bunch of teenagers look like they’re homeless?”
“Ah, pretty sure that’s because they’re dumpster teens. Lots of trouble, those ones.”
OR in a non-speech text sentence:
The dumpster teenager groaned as she checked her phone, realising it was dead and that with her charger broken, gaining a new one would be close to impossible.