What did Jack's parents give him for his 18th birthday?  NOT a circumcision! You see, unlike Jack's friends at school, his parents opted not to have the foreskin cut from his penis... and unlike his friends at school, this means that the sensitive tip of is cock, or his glans, has not been rubbing in his undies for 18 years, becoming insensitive to touch and sensation.. also, his foreskin is especially sensitive to touch and the feeling of strEEEEtching that happens when Jack begins to have an erection in Stephanie's hands... The experience just unfolds in a very lovely way for him, as the bulging stiffening of his penis makes it so that the tip of his cock finally squeEEzes its way up and POP!  Comes out of his foreskin.. you bet he can feel that!
Jack is also quite *SURPRISED* by all the sensation coursing through his body when Stephanie begins to lick about his glans.. round and round and round!!! Mmmm!
Finally, Jack will be just utterly AMAZED by how he can feel every slippery-tightness as he mounts Stephanie, his erection, stretched foreskin and all squEEEEzing up in between the lips of Stephanie's cunt.  
Don't worry Jack. You'll learn how NOT to cum in only 10 seconds!  But you'll have to be patient with a perfect intact cock like yours... just as nature planned it!  

 "Golly! Thank's Mom!... UGHHHHHTTTTT!  OHMYGODDDDD-FUUUUUCK!!!!!!!!!!" wails Jack uncontrollably into the night.

 Here's a link about the medical truth to this:  8==>