Women are from Venus I'm not sure where men are from...

So there was a book several years ago Men are from Mars, Women are from Venus. This past week it was proven that men are from much further away than Mars. One of my friends at work is a liaison so he travels from facility to facility. As usual I was having a crazy day he came over to work and asked to be let into the staff bathroom during the course of his visit. I let him in and when he came out he was talking on his cell phone. My immediate reaction was EWWWWWWWWWWWWWWWW. He's like what's the big deal as long as they do not know you were using the bathroom while they were talking to you. Again my reaction was EWWWWWWW. I thought about it some more I had a male friend who used to go to the bathroom while talking to me on the phone. He wasn't quite as subtle. I'd be yelling at him the whole time. He's like both you and his girlfriend (at the time) seem to dislike when I do that. The work male asked me what do you do when you are in the bathroom and the phone rings? My response was that is what voicemail is for. If I have to go to the bathroom and I happen to be in the middle of an intense call I put the phone down say I'll be right back go to the bathroom and then come back. I'm not sure why that is a difficult concept.