The look of concentration!
Credits: Funny Pets and YouTube via imgur, Damodara Unipotato Guthrie, GIFs Community and Facebook
concentration
Zack: Maths Genius
He once got his friends in deep doo in The Hangover. Now Zach Galifianakis is a number cruncher par excellence, leaving many a casino in a cold sweat.
Credits: reddit MRW via Giphy
