Texas Butt Plunge Share definition Flag The act of enforcing ones feces in anothers rectum, therefore they may not be able to poop. My dad gave me a Texas butt plunge last night because I didn't do my homework. Texas Butt Plunge by Isis Foot Fetish December 23, 2014 0 0 Get merch Get the Texas Butt Plunge mug. Buy Now — $32.95 See more merch