I have some padded bike shorts I'd like to wear on a bike ride, but I'm getting pretty in my head about poop particles getting into the shorts and not washing out in the wash.
Poop is water solable, so washing your bike shorts will wash out the poop.
When I bike ride, I just put in my bike shorts and go. I'm about to get really disgusting anyway from the sweat and road gunk flinging up. I'm going to stink and regardless, my bike shorts will probably be shoved in my crack for an hour or more.
I'll go further into disgusting and also say that since I only have two pairs of bike shorts, that if I'm training daily, I will hang dry them and put them back on the next day and get a couple wears between washes. I'm gonna shower when I'm done anyway, I don't have sensitive skin that gets irritated by dirty shorts, and my exposure to others is not existent when riding.
I'm sure I'm not alone, but I'm probably in the minority.