The festive pranking in the Gatland household has been rife in the past few days, and Wales coach Warren has found himself the victim once again.
Just two days ago, the legendary British and Irish Lions coach was caught napping on the sofa by son, Bryn, before the Chiefs fly-half positioned his face a hair's breadth away from his Dad.
Warren bolted upright and got quite the shock, spilling a fresh mug of coffee all over the floor and sofa, whilst planting a firm hand on Bryn's face in the midst of the chaos. It made for comical viewing and had his family in stitches.