Unfornunatly, almost all little boys do this. It is normal. My son is also 4 and has been doing this for a year or so. His doctor said that it was completely normal. I do not want him to feel guilty about doing it, so I have just explained that if he needed to scratch his pee pee, or something like that, he needed to go to the bathroom or his bedroom to do that because it is not something we should do in front of other people. For a while, I had to remind him every day, and I still have to remind him every once in a while. I know it is embarrassing. However, some of it may be to get your attention, the rest is just because he is a boy and has "found his pee pee". I would try not to make a big deal out of it and just explain that he needs to do that in the bathroom or the bedroom. Eventually, hopefully he will get tired of going to another room and decide not to do it. Hope this helps! J.