Cow Giraffe?

Ok so the weirdest thing happened.  I was in Goodwill in Franklin TN, looking through the t-shirt rack, and I randomly came across a shirt with my artwork, used without permission.
Apparently, at some point someone lifted my illustration from this blog and used it as a T-shirt design. (http://jameselston.blogspot.com/2007/05/cinco-de-mayo-giraffe.html)
 And even weirder still, I ran into it in Goodwill in middle Tennessee all these years later.  I did that illustration for fun when I lived in Pennsylvania back in 2007.  Seriously, what are the odds?  There was no tag, so I have no idea who printed my design.

And another thing... COW GIRAFFE?  wha...?