Eh, the guy's just being a goof. I'm sure none of those in generations older than Millennials/Y and Z were ever weird and posed for photos in such indiscreet manners when they were that young.
The ad has been here and there for some time. Just like the person still selling a 25" Ice Pink Schwinn Prelude on Ebay for $380 plus shipping. Clean, and converted to upright bars, but for the past SIX years???