Step 1: Put the shirt on your head inside out with the tag sticking down. Hold the sleeves out to the side (we used long sleeves)
Step 2: Take the sleeves and tie them in a knot behind your head.
Step 3: Fold the top part of the collar up and under, close to your brows.
Step 4: Pull bottom collar over nose, folding the tag inside the shirt.
Step 5: Perform a wicked karate chop to establish ninja skills and intimidate enemies and bystanders (and mamas).
Sometimes Pinterest comes through… especially on snow days! Found here.
Step 6 (optional): Sneak upstairs to plot and scheme and sneak back down to scare Mama later. 
Mega awesome!!!
Those are some super sneaky ninjas, especially that teensy one.
Cutest ninjas ever…until my kids try it, that is! How fun!!!
Your boys look like they are so full of life. So cute!
Emil slays me. Such a monkey.
I saw this on your Pinterest first and just laughed, it’s such a great idea- and so perfectly demonstrated by your crew!
This. Is actually. The best.