cock snot - the crusted smegma that is found under the foreskin foreskin of an unhealthy and unwashed uncircumcised penis.
Bob carefully peeld back the foreskin of juniors big fat cock, ready to engulf all of his offerings.
"Geez junior, when was the last time you showered"
" 3 days ago, why?"
"Because you have an enormous build up of this horrible cheese looking and smelling smegma under your magnificent foreskin"
"Oh yeh, dont worry about that, thats just my cock snot"