In this awesome pic that the Biebs shared on his Instagram, he had just finished a Nerf war with Kendall and her pal Hailey Baldwin.
"Why the need for two guns fool," Justin captioned the photo. "Good work today we were killin everyone #nerfwars."
Wait, why did Justin get two guns and each of the girls only got one?! Unless it was two against one, then we guess maybe it was fair.
We just love that despite insanely successful careers and doing all of the uber important stuff they do all day long, they still like to let loose and have a Nerf war every once in awhile.
Wonder who won?