To be like a bull in a china shop is a simile used to describe an extremely rough or dangerous person in a place where gentleness is a must.
It brings to mind the image of a huge rodeo bull exploding into a tiny curio store and throwing his weight around in a beserk rage, annihilating every last teacup.
The huge wrestler burst into the house, knocking pictures off the walllike a bull in a china shop.
If someone jabs you in the back of your head with the knob of their cock, its called a 'Bull Shark'.
You can be 'Bull Sharked' or you can 'Bull Shark' someone.
Ben is such a cunt. The other afternoon, while everyone was waiting to go out, Ben came out of the shower with a semi chubby, snuck up behind Matt and gave him 'A Bull Shark', right on the back of his head. Everyone thought it was hilarious. But Ben's still a cunt.