Best GameDay signs: Week 4

— -- Arizona knows how to host College GameDay.

Packed in 10 deep before the sun rose in the desert, the Zona Zoo and its constituents were ready at 4 a.m. on Saturday, signs held high.

Here are some of the most savage, clever and funny from the crowd. Don't agree with us? Use #SignUpForGameDay on Twitter to let us know your favorite.