Gross them out with Mr. Gross Mouth™! 
This hinged model of the teeth, tongue, and oral cavity shows the effects of using smokeless tobacco
A bottle of simulated tobacco juice comes with each model and instructions show how to make the tongue "spit"
This model is three times normal size and is mounted on a wooden base
Model Size: 6 in. x 4 in. x 8 in. ( 15 x 10 x 20 cm )