A Hairy Situatiuon

I was having a conversation with a crazy person soccer mom last week about how her son's footballing ability and demeanor changed as soon as he hit puberty. According to her the boy became bigger, faster, stronger and more aggressive on the pitch.
My son had a tough season, he was 12 turning 13 playing in the 16 year old division and played with caution and a bit of fear. Understandably when you are still 12 years old and watch your opponents drive up to the match in cars you only dream about having 4 years from now I can see where the slight hesitation comes in, some of the boys were over 6' tall and some had wee moustaches

Now being raised on the frozen and muddy pitches of Dundee and having the moniker of "The bigger they are the harder they fall" drilled into the noggin by age 6, I wanted my boy to go out there and "Gattuso" his way about, show those big lads who is the cock of the walk - age 12 and all.....

His mother and I have noticed the typical changes for a 12-13 year old boy such as.. the deeper voice, his propensity for long showers and his general disposition for most things parental. That being said we are still left wondering that one burning question - is there any growth in the forest? does the onion bag have any scruff? do the dangles have carpeting? or in other words does the boy have any hair on the sack yet?
I have not bathed him since he was a baby and this type of inquiry can send shock waves through the child/parent dynamic. How do I bring the subject up?
Hey son how was school today can you pass the rolls and bye the way do you have hair on your balls yet? 
Not wanting to be one of those ultra overbearing dads, I did the most reasonable thing that came to mind - I asked my wife to find out.......
I got the look - you out there deep in the bounds of holy matrimony know the look. The look can stop a buffalo at twenty paces, skin it and use its hide as a blanket for a man to cover his ass while sleeping on the couch.
The look can soften even the most hardened man (No pun intended). Yes, that look.
So the quest continues to find out if the boy has any growth downtown, all I want is for him to hit that mark so he can push back a wee bit on the pitch. All of this under the guise of football growth not hair growth. 
Bloody football, how I love you so.....
 

No doubt early puberty was the reason! for this noggin