My answer's probably not what you want to hear, but all my kids watch cagefighting all the time --- on TV & in person. My husband's a cagefighter.
We make it clear to them that they can "play" fight w/ each other ONLY, & they do really good with it. If it goes to far & someone gets a little too rough, that ends the UFC play for the day. Even at age 1 or 2, we'd just have to remind them "Only with daddy". That might seem young for them to comprehend it, but it didn't take long for them to figure it out.
If you don't want him to watch it --- well, that' between you & your son's dad. It's a bonding thing around this house.
at 10:47 PM on Jun. 3, 2009