To beat someone with out them scoring once.
Often used in pool when the loser hasn't potted a single ball.
Or in table football when the loser hasn't scored any goals.
Extremely hard but at the same time most unstable and volatile element in the universe. Decays instantaneously to water upon contact with anything else whatsoever. Thus far detected only once in the vacuum of an ego-centrifuge, where it probably was created by the extreme condensation of an ego with utmost unnecessary self-esteem surplus.
Don't burst into tears, you little piece of d-granite!