Yes it's a random idea and I don't even remember how I came up with it( one thing for sure is my brain almost exploded). I really appreciate Threadless and everyone who like this.

I always love simple graphic with minimum use of color. I drew this out and scanned it instead of creating it completely by computer to keep the hand drawn feel, really love how it turned out. And, if you wonder why the hoodie is different from the tee, it's actually on the back:

I removed the penrose triangle on the front, thought the blivet pencils look cool by itself.

Thanks!