Japanese phrase meaning "Go for it"! or "Do your best!" Similar to how English speakers say "Break a leg!" It's usually echoed before major events involving competition.
Commentator A: It is the finals round of our matchup with our two competitors in their respective corners!!
When you though anything in the shape of a card at someone. You must yell Gambit. This is in reference to Gambit from the X-Men who threw playing cards.
Christian "Gambit". (As you yell gambit you throw the card)
I love to Gambitting.