Doing a sloppy job of cleaning up after jerking off and some cum remains and gets stuck to your boxers. The next time you need to take off your boxers, you have to peal your dick off, thus sticky dick.
When you stick a fruit roll up on your dick and use it instead of a condom. After your done she can eat it to. It's three feet of fun!
Girl: Hey, do you have any uhmmm... Protection.
Boy: Oh.. Oh yeeaaah!
Girl: Oh My GOD ! It's Huge!
Boy: I no baby. Its three feet of fun!
Boy: Its a Sticky Dick Rollup!