Person 1: I bought a lamborghini which can exceed 150 mph!
Person 2: Wow, your new car's a rocket, man!
Another example:
Person 1: OMG i'm late!!! *Starts running very fast*
Person 2: Woah, I didn't know you were a rocket!
When you're jerking off and put your laptop screen above your dick while laying down. When you cum you make the sound of a rockets engine as it hits your screen. Replicating a rockets engine.
A large metal dildo usually being propelled by a chemical reaction between 02 and H2 and if large enough can kill anyone in up to a 2 mile radius some times these are used to Cary nuclear warheads or even people to the pussy in question.
Used by Scottish adolescent female neds (coco banjinos) who believe they are clever, fashionable and good looking to describe other Scottish adolescent female neds who the aforementioned see as downright ugly, very unfashionable and completely stupid.