An Odd Instinct

Is it possible that sucking/slurping spaghetti through your lips when faced with a dangly piece hanging loosely down your chin is something we do by instinct? While this less than scientific assertion may seem ludicrous it is the only conclusion I can make from watching Ella suck noodle after noodle down as if we had just had a lesson on how to do it. Only there was no lesson. It was instinct. Amazing. What would Darwin say?