Dumpster diving is when you go inside a dumpster and look for trash that might be useful.
Liam:oi mate wanna go dumpster diving?
Oliver:dumpster what?
Liam:blud just get in a bin and search for shit.
Looking for hook-ups or relationships, particularly with women, who use online dating sites or personals ads. (The logic being that almost any girl can get laid without having to advertise for it... and the ads are society's dumpster for those who can't.)
You can tell he met that skeezy chick on an online hook-up site. Yikes! But, hey, you can't expect to find quality when you go dumpster diving.
Going down on a real nasty chick
She made me go dumpster diving.
The act of having anal sex with a woman
Dude she asked me to go dumpster diving
OHOHO So you DID find it? I guess it IS FBI then isn't it? Hello... Mrs Agent?
Hym "Yeah. Somebody went dumpster diving didn't they? Don't throw things away. The trash is the first place they check."
Attending a Trump rally; dangerous yet necessary risky behavior.
Despite the risk, I went dumpster-diving and attended a Trump rally.
the act of performing oral sex on a girl after ejaculating inside of her
“Yo, I went dumpster diving last night after shooting the club up with my girl.”