With the exception of shitting, non of those things are actually disgusting, but I suppose it's subjective and witnesses would think differently.
The only thing that I do in the shower that I would consider disgusting is fart, but that's only disgusting because the water and steam stops the gas from dissipating properly and depending on what you've eaten, it can be really bad... suffocatingly bad.
It's disgusting, but also hilarious when you need to suddenly step out of the shower for fresh air because the fart you just did is choking you.
The only thing that I do in the shower that I would consider disgusting is fart, but that's only disgusting because the water and steam stops the gas from dissipating properly and depending on what you've eaten, it can be really bad... suffocatingly bad.
It's disgusting, but also hilarious when you need to suddenly step out of the shower for fresh air because the fart you just did is choking you.