gur-tush Share definition Flag 1. It is a way of telling someone that they act older than their actual age. 2. A party pooper! 3. Boring, with no fun life. Come man speed up. You act so gur-tushed. No one wants to hang out with a gur-tush. gur-tush by M. Thomas July 25, 2006 0 0 Get merch Get the gur-tush mug. Buy Now — $32.95 See more merch