Tossagram Share definition Flag Performing the act of a Tossagram, is tossing one gram of your dried feces, into the mouth of your mate and/or partner. Dude, my girlfriend wants to tossagram with me and my dad. So I dumped her. Tossagram by lecher October 25, 2009 0 0 Get merch Get the Tossagram mug. Buy Now — $32.95 See more merch