1 definition by zissa

1. Something that is very hard or difficult.

2 An extreme boner.

Comes from Kurt Zisa, a powerful and extremely difficult boss in the PS2 games Kingdom Hearts & Kingdom Hearts Final Mix.
"Damn, that Chem 2 exam was a fucking zisa. There's no way in hell I'm passing this class."
"I watched so much porn last night that it gave me a zisa that lasted for hours."
by zissa December 15, 2021
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