You know what they say, "boys will be boys." As a mom (that only had one sister growing up; not to mention I was a sissy) I try to let them be. Here are some pics of them climbing on our smaller slide thing. Walker likes climbing up the bigger slide as well, and you've seen Wilson swing quite high.
Last week my friend's son fell off the glider part of our swingset and .... broke his arm in three places (gasp!). She and I are feeling guilty, but alas, we do want them to be boys. I am sticking closer than normal when they are climbing though. By the way, Gavin will probably have a cast for 6 weeks or so. He is 2 1/2 years old.