A half-circumcised penis. Typically, the top half is circumcised and the bottom half has a healthy foreskin droop, but it can go either way. The most popular reason for having a foreskin mullet is because it is an interesting strategy for "docking". It is most common on the east coast, but is slowly becoming more and more popular in the midwest.
"Hey did you see Jimmy's foreskin mullet? That guy knows how to party!!"
"Yeah bro, I'm jealous!! He is totally business in the front, party in the back!"
"Yeah bro, I'm jealous!! He is totally business in the front, party in the back!"
by HarDoug316 May 20, 2014