When you wank so hard, your cum makes a hole in the roof.
I took a ballistic wank this morning.
A ballistic wank is where you masturbate but don't catch your load, causing it to be fired like a projectile across the room... This is usually done in hotel rooms and rental properties where the landlord is a douchebag
That hotel room was a disgrace so I decided to have a ballistic wank before I checked out