Is it normal to wear plastic bags as underwear?

Back in middleschool i got into this really weird routine. Instead of wearing underwear, I would just wear a plastic bag, but duct tape the holes to my legs. I had an accident in school in 9th grade and ended up just completely ruining my new pair of abercrombie and fitch board shorts. The next day I saw my neighbor picking up his dog's poop with a plastic bag and after some testing, I got the bags to fit onto my "private area". I've had explosive diarrhea since I can remember, so the bags have really saved tons of pairs of board shorts. Now when I sneeze I shoot out poop into the bag instead of my shorts. If I get the bag tight enough it doesnt even smell at all! But sometimes when I pee in them it overfills and basically explodes like a water balloon full of piss :(. So, is it normal?