1 definition by papabearoreilly
Verb - To challenge an opponent to a more serious, higher-skilled game when losing a casual one; to strengthen rules in order to overtake a less-abled opponent. Not to be confused with TomCavanaughing, or "taking a casual game way too seriously."
"It was a great pickup game until Joe decided to kirby it up and started complaining about traveling and bumping."
by papabearoreilly April 20, 2010