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1.
Probably the most well-recognized special attack from the crazy mech-fighting anime Tengen Toppa Gurren Lagann. Often considered the most epic special attack seen in any anime cartoon.
There was so much awesome packed into that Giga Drill Breaker I thought my head was going to explode.

by Airec May 05, 2008
 
2.
A drill that will pierce the heavens. usually followed by screaming and yelling ending with a large scale explosion covering a nukes radius at bare minimum.
FINISHING MOVE! GIGA DRILL BREAKER!!!
My Drill Will PIERCE THE HEAVENS!
Who the hell do you think we are?
by Korean_Troll April 07, 2011
 
3.
Very similar to the "Falcon Fuck".

The ultimate manouver of penetration, so powerful that it will pierce the heavens.

To perform, run towards the bitch screaming "Giga... Dorill...BREAKER" as you thrust into her vagina, destroying her in the most manly way imaginable.
I Giga Drill Breaker'd Katy last night. I destroyed the apartment.
by -SEV7N- March 24, 2010