1. Looking through your neighbors trash to see if there's anything that peaks your interest or something that is in good shape that you can use or should be donated to a charity instead of thrown in the dump.
2. Going to a bar or nightclub with the intent to meet some trashy looking character because that's the type you like or in the mood to hang out with.
1. I went trash trolling down the alley this morning and found a recliner that's in really good shape. Only a few stains to get out and spray it with fabric freshener.
2. I'm going trash trolling at the clubs tonight to find a trashy looking person to hang out with or maybe hook up.