Top Definition
Gronknasti - Noun, Verb, Adjective.

Definition - Noun - A dance move that resembles the Giant Wacky Waving Inflatable Arm Flailing Tube Man, made famous by current New England Patriot, Rob Gronkowski.

Definition - Verb - Describing the act of Gronknastiing.

Definition - Adjective - Witnessing an event that is shockingly priceless.
Gronknasti - Noun - I drove by the cell phone store today and saw a Giant Wacky Waving Inflatable Arm Flailing Tube Man and it really made me want to hit up the club and do the Gronknasti.

Gronknasti - Verb - I can't wait to hit up the club tonight and Gronknasti all over my dude bros.

Gronknasti - Adjective - Did you see see that huge dude on the dance floor flailing his arms like a Giant Wacky Waving Inflatable Arm Flailing Tube Man? That shit was Gronknasti.
by Scoonie32 February 09, 2012

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