I watched it several times--and it was definitely his thumb! Big deal anyhow--they deserve the "hostile" finger! LOL! He was probably thinking it!
Speaking of which, he IS in pretty good shape. :)
(I've been dealing with a moron right here on FR who keeps calling the President a liar. I think it's Ted Kennedy incognito........and this guy's been around here for 6 years! I still find it amazing that the far right agrees with the far left more than it agrees with us actual conservatives. Unbelieveable!)