being a mom of a boy

Ok, so today, being a mom of a boy, there seems to be just certain situations I just don't know how to handle. They seem like very boy like situations and I don't know where they stem from. I dont know if it is normal. I don't know how to deter it? I am confused at times and at a loss. For example tonight, he wanted me to play with his toys with him.... " Mom, you be Optimus Prime and I will be Bumble Bee and I will kill you."  Ummmmmmmmmmmmmmmm, OK? I don't think I like that idea. Mommy doesn't play that way. Optimus Prime and Bumble Bee are friends and they are both good guys.  I am trying....

Thankfully, I just started a bible study at my church and it is called Wisdom for Mothers based on Motherwise. All I can say is dear Lord please make me wise.