To make an irrational verbal attack on someone.
Mike got home late from work only to have Nina totally nut off at him, thinking he was cheating on her; she only shut up when he showed her the design he had to create at short notice.
The act of comparing the reproductive organ, testes. The man said to of had the biggest nuts by group consensus is the nut off winner. A common game played whilst intoxicated at sausage parties between young men who wished to prove themselves to be the sex-king of the world.
David your nuts are massive compared to my sultana's, you are the nut off champion.