Is this a hunger cue? Or something else. He is 3 months old and has just started to kind of smack his lips and flick his tongue out. I seem to recall someone saying it could be wind rather than a hunger sign.
It is quite bizarre - like a little lizard!
BTW - putting the words - tongue, flicking and baby into Google certainly brings up some odd links! Baby being used in a non-biological way I might add!