Walter's last name?

[somethingofafan]

In the episode in which the math teacher gives birth, Theo and Cockroach are playing football or something, and one of them says something like, "The Huxtable-________ combination..." What was that second name? I didn't hear it too clearly. Was it even a name, or did they say something else? If it was a name, did they use it in any other episodes? Thank you.