Wacky, here's my serious answer if you want it.
The humor of your sig (or at least the humor I have come to find most true) is that it has been the same for so long. And it's a rediculous moment, fraught with discomfort, obfuscation, tenderness, love, and sweat. It's a funny enough moment that you can think of something new each time you see it, and it's especially funny if you consider the random post that connects with the scene.
Don't change it unless YOU want to, buddy.