Doing something, usually with no specific plan, and with no real ending or meaning, other than thoroughly enjoying what you did.
It should also be something you can recall in your mind as having had a "Great Time".
A "Fishizzle Run", (Motorcycle Ride), is meant to totally enjoy being on your bike and the roads you wind up on.
A way in which someone beats their penis violently when they suffer from erectile dysfunction. It can also mean to shake relentlessly with a force of a magnitude 7.5.