High-Jack Share definition Flag The act of filling a bong with Jack Daniel's, and upon finishing, taking shots of the bong water. Dude my roomie and I had some Jack left over and decided to high-jack his 2 footer. High-Jack by Tricky-Dick July 9, 2011 0 0 Get merch Get the High-Jack mug. Buy Now — $32.95 See more merch