A mixture of non-menthol tobacco and marijuana cut up or grinded together. Genereally smoked out of a bong or pipe. Smoke should be inhaled and quickly exhaled unlike that of marijuana smoke. Also regarded to as The Domernautz.
John: Yo man, you got any Natural American Spirirt?
Mike: Yea, why?
John: Lets cut it up and mix it with weed so we can smoke mulchies.
Mike: Hell yeah bro, I love The Domernautz!