The easiest way to get Jessica to pull the most hilarious of faces is through the simple act of burping her.
To achieve this effect, first feed her a yummy bottle full of mommy’s freshly juiced milk. Next, sit her upright and grab the front of her so that she doesn’t topple forward. Finally, rub vigorously on her back in order to induce the wind out of her.
(And if that fails, sling her over the shoulder and pat).
See what I mean? :)