Oh, she does that all the time
Kris was working late tonight, so I wandered over to Mike's for pizza. We watched a tivo'd version of Hustle that he had, ate pizza and lounged around with Mike and Maeryn. During most of the show, Maeryn was holding onto the edge of the couch and walking back and forth along it, demonstrating she knew how to walk, she just chose not to demonstrate such talents to the giants known as not-Mom.
At one point, she was at the end of the couch where Mike's feet were. She reached up, grabbed his foot, and shoved one of his big toes into her mouth.
I exclaimed, "Ewwww! She has your toe in her mouth!"
Mike looked down, and casually commented, "Yeah, she does that someti... YEH-OWWWWWW!"
Uh huh. She does that sometimes, eh? Does she always chomp down, too?