A YTMND is essentially a sound clip, and a funny or otherwise relevant image tiling accompanying it. If there's more to it than that, it's news to me.
These are a few of the YTMNDs I've made in my free time. More will come if I think of any, but until then, enjoy what's here.
I'm a Banana!
Count Tony from Halloween Havic 1993
Soda Popinski Will Crush You!
Ant Man
A Tribute to Kyle Gass
PS3 = EPIC FAIL
Let's Go Drink Some BEEEEER!