NSFW. Intended for adults only, 18 and up. I don't own any of these pics.
"Have you been playing with it again son?"
"Uhhh, I guess so…sorry Dad. I didn’t know you were coming home early."
"Nothin’ to be shy about boy. Since you are already naked, I might as well have a look to make sure everything is fine down there." He checks.
"Looks like everything is fine. Go ahead and finish yourself off so I can be certain."
The boy was embarrassed, but also kind of turned on by his Dad watching him stroke it.
Don’t tell your mother.