They can't bond with each other, no matter how hard they try.
A change of pace.
Because all the rice is gone, and three hours later, they are still trying to back out of your driveway.
It was all broused up!
Because they fight knights!
Because, if you can't helium or curium , you'd barium!
Because HE's noble.
The name's Bond, Covalent Bond
The noble gases, because they can't form bonds
Noble rocks