"The Greek word phimosis means muzzled and is used -- often incorrectly -- to refer to a foreskin that cannot be retracted (for whatever reason) ... What parents should know is that almost all babies have non-retractable foreskins, that this is normal, and that the foreskins of most males become fully retractable by the time they are 18. It is also important to know that many adult males with non-retractable foreskins are perfectly happy with them that way. Adult males with non-retractable foreskins who would rather their foreskins were retractable can easily and safely stretch their foreskin opening until it is large enough to slip comfortably over the glans. A non-retractable foreskin is not, in itself, an indication for circumcision." (Answers To Your Questions About Your Young Son's Intact Penis -- NOCIRC Information Series pamphlet #4)