I agree it is dangerously small for a non-erect penis. It is non-erect right? If its 5.5 inch hard your in deep trouble. See the doctor now, its just too small.
No still not big enough, 8-year-old males require remarkably large penises. You are gonna have to go with penile implants, because you just aren't gonna be able to cut it.
these dudes are just joshing you ... the truth of the matter is that you need desperate medical attention but thts just a suggestion i am not a trained physician, nor will i ever be
usually babies have 20 inchers
the older they get the smaller are their dicks
an eight year old guy should have about 14 inch