All hockey. All the time.

So, laying in bed with Madden, and he wanted to do math problems before he went to sleep. 
First one was 11+22, then 45-5, then I asked him, "What's 3 groups of 3?" 
Without even thinking he said, "9". 
I was shocked he answered it so quickly, so I asked him how it did it so fast. His response,

"Well, 3 on 3 in hockey is 6 people so another 3 would be 9. That's how I pictured it in my mind!" 

All hockey. All the time.