My dear friend .. I am uncut and I got the same thing too ... I can pull it all the way back to the end of the head ...but here is the interesting part about mine ... it does not slide back until my penis softens. Its almost as if the back of the head acts as a "hook" to hold it back ..lol..."hook" .. hahaha .. I feel funny saying that too. Well I thought I might share that with you ...maybe your wife can pull it all the way back behind the head ... although please dont do anything that hurts.
I am curious ... does the foreskin not slide back completely (as in go behind the head) for all uncut guys? When I do it ...the head is completely exposed!!