Blep

Apparently, "blep" is the technical term for when your cat sticks its tongue out ever so slightly.  Nuch believes Tipper is trying to be cute.  I've read that cats do this because their teeth hurt or their gums have an infection - often caused by Feline Leukemia, which Tipper has.  Nuch prefers the "trying to be cute" explanation

Poor Tipper - always misunderstood.

More Tipper pics with no blep, but still cute.