7.4 on the Rectum scale Share definition Flag A blasting, large stinky fart that usually sends people running,afraid of "after-shocks" Man, I had to open the windows, cuz that was a 7.4 on the rectum scale!! 7.4 on the Rectum scale by Joe.long222 December 15, 2007 0 0 Get merch Get the 7.4 on the Rectum scale mug. Buy Now — $32.95 See more merch