2-a-days Share definition Flag A term used within the wildland fire fighting community. Doing PTs twice a day instead of once. Often used to wash unwanted employees. rat beard, make these bitches do 2-a-days for the rest of the year. 2-a-days by Big Ernie December 27, 2003 0 0 Get merch Get the 2-a-days mug. Buy Now — $32.95 See more merch