SMOKING gave a man a shockingly green, hairy tongue, pictures reveal.
The 64-year-old from Ohio suffered the embarrassing condition for two weeks before he went to hospital.
Doctors at Wright-Patterson Medical Center found the thick carpet of dead skin and bacteria developed after he was put on a course of antibiotics.
Dr Eric Karr said: “Risk factors include smoking, dehydration, poor oral hygiene, and antimicrobial use.
“Although the tongue discoloration is frequently black, brown, yellow, or green discoloration is possible, as well.”