Oakley's new trick

Lately when Oakley is hungry or if I just fed him he will suck his bottom lip.  It is so cute and it makes us laugh!  Well today I was trying to get a picture of it before I fed him...

 I got some bubbles...

 Here is comes....

 Oh, no I waited too long, he was getting pretty mad at me!

After I fed him he started doing it again, I swear he is going to give himself a hicky!