He’s 14 you say? What about handling a penis do you think he hasn’t already figured out for himself by now? Got news for you, this post isn’t going to be anything shocking to him.

“... a lot of men aren’t good at picking up on hints.”
No, they're fully capable of picking up the hints just fine. They just choose to ignore them.

"... a lot of men aren’t too good on picking up on hints."