When i was young i used to put small things under my foreskin, well, I barely remember because I only do it for a short time, but it come to my mind today so i think why not? So i walk on the street and saw some little rock, clean it first with my hand, after i split on it, then put into my mouth to clean it because i don't want any kind of infection and there this was the only way, then i find a hidden place, dry my penis under my foreskin and put one small rock under it. After a short walk i can't feel it, i thought it was fell off, but when i touch my penis througt the trousers i feel it, so it was too small to make any difference, so i decide to put another slightly bigger there too, same method, and after that i now can feel them under there, but after a while i can't feel them again. There was plenty free space there but i think it's not gona be better so i decide not to do anything with them. I do it 8 hours before and the rocks are still there, i almost forget them. I'll take some picture and upload them here a few minutes later, i go now to toilet and take them off, so...

Edit: I uploaded pictures, here is the galery

http://www.imagefap.com/pictures/3189870/small-rocks-under-my-foreskin