Advent Calendar Day 2 iStock

Welcome to day two of IrishCentral's Christmas Advent Calendar! We're counting down to Christmas, and in lieu of chocolates, we're giving you our favorite Christmas videos of all time. 

Day 2 is a testament to the time-honed fact that is is just not Christmas without a good Irish mammy prank, and this is one of the funniest ones ever. 

Mary Brogan, an Irish mammy from County Mayo, had a devious trick played on her a few Christmases ago when her daughters made it look like their dog had devoured the Christmas ham she had lovingly prepared. 

Her reaction is priceless!