Here's the t-shirt design, Byebi, that inspired the cake. It's too bad that it's currently out of print. :(
And here's my interpretation of the graphic. Again, you can read the description and see the in-process photos here.

I made this cake (all the cakes really) because I thought it would be fun but it was really nice to also be recognized with a 2nd place win in the 2D category. Woohoo! Thanks threadcakes! P.S. Check out all the awesome winners in the 2D and 3D categories here.
P.S.S. I love this cake so much, I think I'm going to reproduce it as a display cake using styrofoam :).
