AUTOEXEC.BAT Share definition Flag 1) Computer file used during boot. 2) Male genitalia. "Dude, you don't wanna go around fucking with your AUTOEXEC.BAT!!" AUTOEXEC.BAT by Soiled Undergarment July 9, 2003 0 0 Get merch Get the AUTOEXEC.BAT mug. Buy Now — $32.95 See more merch