An anti-smurfing campaign kicked off in Tennessee this week, and no, we aren't talking about the little blue cartoon characters.

"Smurfing" is the practice of purchasing cold and allergy medicines containing pseudo-ephedrine to sell to people cooking meth.

State legislators launched the campaign to inform consumers that smurfing is a serious criminal offense.

They are doing this by posting warning signs at check-out registers.

Officials say they hope the signs will compel smurfers to think twice before committing a crime.