What would you do if a visitor knocks the door when you are??

Interesting question. Unlike a phone, which I'll let ring, I will dry off, robe, and answer the door. Depending on who it is, I'll let them in and finish what I was doing. If its someone who I don't know well, then I'd ask for them to return. If its a salesman, I just excuse myself and let them be on their way. Most people get embarrassed when they "disturb" you when taking a bath and politely excuse themselves. So I don't see this as a big problem.

Interesting question. Well my bathroom is near the door. I would open the bathroom door and shout "who is this" If the person knocking outside is acquaintance, I would tell him/her straight away that I had been taking a shower, and he/she should have waited for few mins. In other case like if the person outside is stranger, I would keep quite for few seconds and then comeup with something called pretending. Hey i'm "so sick, caught cold, flu" I have been advised to take rest. Sorry, i'm too sick to walk, accept sincere apologies. Laters may be.