We've all been there. You're at your favorite fast food restaurant, preparing to mow down on a burger and some fries, but first, you need ketchup. One measly ketchup cup can not possibly contain the amount of ketchup you need. So you have to use two or three to get the job done.
Well, it's turns out that that isn't the case and we've all been using ketchup cups wrong since the beginning of time. At least according to this Russian guy.