Normally you do not need to pull the fireskin back at all and as long as your boys can pass urine normally there is no need for concern. However your one son has had an infection of the are around his forskin. It seems that they both have forskins which have become very tight or attached to the tip of the penis. They probably need to have a circumcison done. It would be best to ask a urologist to see your boys and make a decision as to what neeeds to be done.
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