Drug-free smokers wanted

I was walking through the halls of my school today and saw an flier seeking participants in a survey. It reads "Smokers Wanted. Quiting not neccesary." Upon closer inspection I saw a small line that read "Participants must be drug-free." Typically this type of twisted misunderstanding of drugs is something I chuckle about and comment on to my friends, then go about my day. However, this is a study being done by researchers at Duke University. These are the people that are generating the data on drug use in our country and they seem to have a problem recognizing that nicotine is a drug, I'm willing to be because it is legal. I'm thinking about calling the researchers and asking if they would accept me even though I love a good scotch here and there. I'll be sure to post my findings.