I think KidXister nailed it- ren and stimpy, funny when I was young and now it's just so ... wrong. That much aside, this is really excellent stuff. I tried a little stencil work and it was tough enough getting two different layers to work together, your work is really impressive.
Lol I saw the chihuahua before but I never realized it was ren. That is so awesome! The space madness episode was my favorite when I was a kid. Then I saw it as an adult, very disturbing show. Fond memories.