Buzz Lightyear : Smokin' Crack
Infinity is a number that represents the limits of human capacity for counting. Infinity is the boundary where we stop attempting to calculate and just say "Screw it!" and use the infinity symbol.
Because infinity is when we stop counting, there is no higher number than infinity. Infinity + 1 is still just infinity, no matter what your little, variably annoying little brother may say.
Therefore, Infinity + 2, Infinity x 2, and Infinity x Infinity x One Gazillion still equal Infinity.1
From the Brand Spankin' New Math Wiki.