Do We Have Another Thumbsucker??

Today Jackson was on the couch beside me when I started to hear an all to familiar "slurping" sound.....he was sucking his thumb! Or should I say he was attempting to suck his thumb. It was honestly one of the funniest things I have seen him do! I quickly ran to get my camera to capture this moment on video! I'm curious if he will turn into an avid thumb sucker like his sister??