dirty chihuahua Share definition Flag When a guy rubs his thingy in grease until it squeaks while he does the "dirty"! He had no friends at school, and no one to talk to, so he spent many a night treating his "thingy" to a dirty chihuahua. dirty chihuahua by Holli Doyle November 13, 2007 0 0 Get merch Get the dirty chihuahua mug. Buy Now — $32.95 See more merch