a unit of explosive force equal to one billion (109) tons of trinitrotoluene (TNT) or a unit of weight for a really fat person.
damn that girls badonka donk weighs at least 10 gigatons!
by dollsofvalley June 14, 2014
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A form of measurement used by mostly “youngsters” or “millennials” to show how large something is when all other words have failed in expressing how big said object or action is.
Person 1: Yo man! Last night she gave me the gigatonic succ it was so extreme!!!

Person 2: That succ had to be quite the deal if you had to use “gigatonic” to describe it.
by Kelpflakes October 30, 2017
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The move Tinkaton uses to destroy everything
Me: Tinkaton vs Starmobile, who will win!?
Tinkaton used Gigaton Hammer!
*One shots Starmobile*
Me: …
by beluga the suzzi cat December 30, 2022
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