Yes, altho it wasn't entirely from scratch. You see, this animated gif is a actually a sprite that I made for a game that I am making with RPGMaker. I had the idea when I played the diaper games at FTT,
http://www.foxtalestimes.com/Games/index.html. This is actually the default hero of RPGMaker2003 (Zack) wearing pjama's from Weston Academy, with a diaper that I drew myself. It took me quite a while first to make the sprite for my game, then to create the animated gif file out of it, which was hard to do with no free software to use, I ended up programming the computer to concatenate the images myself.
The sprite has 12 images, 3 foot positions x 4 facing directions. The animated gif file animates walking in each of these directions using 64 frames total.