Gavin makes a discovery

The last several weeks Gavin has been taking a swim class at the local college. He goes for 40 minutes with Shannon and joins a few other kids and the instructor, a (well-endowed) student named Jenna. Gavin quickly learned her name and would say all week, "swim wif Jenna?" Shannon says he loves to go to her when they swim and he becomes second best. Tonight as I was undressing to take a shower, I stood in front of Gavin in my bra. His quick response after taking a look at me was, "Jenna?" Shannon and I nearly collapsed on the floor laughing. Gavin made his first association with the female body, only mommy is much less blessed in that area. At 21 months...what does the future have in store for us?