A person, often a woman, who finds the trashy- coulnd't care less- look Very attractive!!! E.g. to meet a man on the street, looking like he woke up in a dumpster that morning with he's ripped- never washed jeans, t-shirt, preferably a big beard, sunglasses and some "casual shoes" would be a true treasure of the day for a dumpster diver! (tattoos are often plus).
-Oh my goood!!!.... Did you just see that dude over there!?
-Dude, he was like homeless I think....
-Oh... Don't know if I care though!
-You are such a dumpster diver!