Beforeskin 

The foreskin that existed before it was amputated during circumcision.

I will never forgive my parents for having me circumcised without my consent; I sure do miss my beforeskin! :/

Beforeskin by mASSterbait October 22, 2016

Dr. Keforeskin 

a humorous nickname applied to an uncircumcised man.

other nicknames for uncircumcised men are: rumple foreskin, jedi (the foreskin is strong with this one), and bruce lee (enter the foreskin, foreskin of fury)

i feel bad for ol' Dr. Keforeskin... poor bastard has to clean out his smegma every day.

Dr. Keforeskin by Wild Drunken Bill August 6, 2007

John deforeskin 

Someone that has a small dick with a lot of skin.

My girl said her ex had a John deforeskin

John deforeskin by eatmydikandballs December 27, 2019

reforeskin 

To reattach a foreskin or to regrow using various skin grafts/stem cells.

Dude I'm gonna reforeskin you, so I can recircumcise you.

reforeskin by stain domain June 7, 2016

before skin 

The skin located directly before the foreskin.

That poor man cut his before skin and now he is bleeding.

before skin by Melosh November 22, 2006