IANAL

<insert standard anal joke here>

No.. not "I anal".

It means "I am not a lier." er, uh, excuse me I mean: "I Am Not A Lawyer".
Close enough though.

Heh.

But really... who cares?

Do people go around professing: "I'm not a painter/policeman/politician/astronaut/geek/etc..." when they give advice in real life?

Since when did lie-rs lawyers obtain this special status?
Btw, legalese should be designed to be more understandable and not less intelligible.

So someone says: "I think the red flavor will give you more taste."
Or they say: "I think the red flavor will give you more taste but IANAL."

Is there really any freaking difference?
I'll judge what you are saying based on what you are saying.. I don't give a crap what your profession is!