Do you (or someone you know) smack when eating?

I used to smack when eating as a young child. For those that are not familiar with the term smack (it simply means to make noise while you're eating, using by habit of chewing your food partically with your mouth open) As a young child it was a subconscious thing that I wasn't aware of until one of my older brothers pointed it out to me. I don't anymore and I've pointed it out to my own children who used to do it as well. How about you, do you find it annoying when people smack while eating? Do you even notice other people smacking? If you haven't noticed before, and you noticed within the next few days, please respond and let us know do you think it is irrating to hear?