Top Definition
(adj.) When something is so funny, usually to an intoxicated person, that there is a large probability they will fall off their barstool.
1. "I just fell down in the bathroom and laid there for 20 minutes." "HAHAH that's hyfuckingsterical!"
2. "Why is my clorox wipe dispenser full of tortillas?" "Dude that's hyfuckingsterical!"
3. "It was hyfuckingsterical, you picked up her Chihuahua and threatened to kill it yelling 'It's not Cinco de Mayo, bitches!'"
by muahahadrunk July 06, 2010

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