‘Fruit’ is the description Tyson typically falls back on when denying his homosexuality.
The logic being this is typically Tyson. Plausible deniability in case anyone calls him out on his attraction to men.
Fruit typically refers to a male homosexual, which technically isn’t Tyson’s orientation as he is romantically bi. He isn’t any more inclined to admit that to anyone, but that does mean that when he says “I’m not a fruit” he isn’t lying.
If there is anyone that Tyson can lie to, it’s himself.