Sounds like warts, and that's not from a tanning bed. He needs to get these checked out, and you should abstain until you find out what is going on. Its possible its folliculitis, or shaving bumps, but they really do sound like warts.
Aj
You can just go to yahoo and type in genital warts califlower like and click images for pics here is a image link that I pulled up http://img230.imageshack.us/my.php?image=img0113fx2.jpg