(As in, "laugh at because it's funny" rather than "laugh at because it's pitiful". I've had way too much of that with The Bringer of Light lately.)
Step 1: Put down your drink.
Step 2: Swallow any drink in your mouth.
Step 3: Click on this link.
Step 4: If you can't quite make out the picture, click on it to enlarge.
Those of you with any military service will definitely get the humor.