I work in a small office with just a small, single-occupant bathroom for office staff and the public. My office door is much too close to that bathroom door, maybe 25'. The bathroom door has about a 1.5" gap under it and a hard, tile floor. Suffice it to say that I unfortunately can hear whatever happens in that bathroom. I can't complain about every issue that causes, because I don't have time to list them all.
For now I will just say that anyone who answers their phone while taking a dump is a loser.