This made me laugh! I have a brother who's only one and a half, but is just growing into those things. I have a slightly older younger brother, who's ten, and loves fighting and romping etc. My older brother, who's a year and a half older than me, loves all that kind of thing too (typical boys!) and they spend their whole time playing with eachother, even the youngest! So, like in your acrostic, how can I resist joining in? In moderation, of course. And, as in the last three lines, I am (unfortunately) 100% the best at nerf gun battles. They learnt that long ago, though they hate to admit it. Haha
I really loved this, it made me smile.