I didn't find many good examples of boxers so that aspect is a little weak (usually just the waistband) but most other kinds of underwear should work pretty well. Also trained on no underwear visible. I might see about refining the boxers thing at some point.

Also you might get a double butt when you do rear facing shots, I apologize for that.

Trigger word: sagging_pants

Helpful words: baggy_pants, cargo_pants

Helpful Negatives: ??????????, underwear