The Man with the Invisible Trousers.

This is a fun little flash puzzle platformer, a bit too short, and a bit to easy but still pretty cool.

Don't let the name throw you off, it isn't nearly as dirty as it sounds (Actually it isn't dirty at all, a lot more is invisible than his trousers if you know what I mean ) (Actually he is just a torso)

Also don't let the description throw you off either, it's described as a mystery/detective game but it really isn't in anything but he story, the gameplay is 100% Puzzle Platformer.

Give it a shot...

armorgames.com/play/10807/the-man-with-the-invisible-trousers

I cant call it too easy and to short. but game was pretty cool. It even has editor.