The power of friendship is the derivative of hugs with respect to time. In classical ponymechanics the magnitude of a hug is measured by taking a simple closed curve enclosing the subject of a hug and then integrating the force applied during the hug over the curve dot ds, where s stands for squeeze.

Merry Hannath’s Warmas Evanakka to everypony!

(PS: Non-classical ponymechanics is basically “oh screw this Pinkie Pie keeps breaking our equations anyway I’m going to stop doing science and just go eat cupcakes”.)