Is a 2.5 inch pen*s normal for my son?

My son suddenly asked about it and while he did that, in my mind I laughed but I thought he is really serious so I found this site.

Everyone comes in different sizes and shapes. If his dad is small, maybe he just inherited his genes.

Just remember that your son may not be or is only just coming into puberty, he has got a good 5/6 years to go yet, developing hair etc, sit him down and explain to him that everyone develops at a different rate, that his pen*s will get bigger as he goes through puberty. Tell him that every man is different and so is the size of their dicks. He shouldnt be to concerened about it at his age yet. Maybe get a book on male puberty which shows the stages of development, its good that he feels he can talk to you about these things, so don't ignore it talk openly about it. Hope it helps!

depends on how old he is, um dont worry about it too much cause he might be going through puberty.

How old is he?

he is still 12.