soy dog Share definition Flag Code name for sexual intercourse. Best when yelled out in a fancy restaurant at the top of your lungs. Replaces other sexual code "hot dog" for the vegetarian/vegan audience. "Did you soy dog last night"? soy dog by kgr87 January 26, 2011 0 0 Get merch Get the soy dog mug. Buy Now — $32.95 See more merch