It's good but...
I think you really missed a creative opportunity by not showing what the little brother looked like...or for not showing how the older brother's leg would be replaced. I felt cheated without seeing those two things. Anyway it was funny and nostalgic.
P.S. People like to support nice people. Your author comments seem quite rude and aren't helping you at all. People will troll you just because they know you will react poorly. Newgrounds is truly a family and kindness will get you a long way.