Terrence Howard is trying to get to the bottom of a cleanliness campaign billboard featuring the actor in his adopted Philadelphia, Pennsylvania - because he had no idea he'd signed up for the job.
The Hustle & Flow star was shocked to see a photograph of himself on the giant Cleanse & Protect initiative poster above a major city thoroughfare.
The suited movie star points into the camera in the snap for the ad, which urges Philadelphia residents to wash their hands regularly.
The billboard was shown on U.S. late night TV show Lopez Tonight! on Wednesday (06Apr11), when Howard was a guest.
He said, "Somebody asked me, 'Can I take a picture with you...?' They took the picture and two months later, I'm driving down the street and I'm like, 'Somebody owes me some money!'"