Waiter, there's a yukkuri in my burger.
This is the third yukkuri-in-a-burger pic on this site, if my memory is correct. I'm thinking of making a reimu_burger tag for it.
Yes, it's a Walfas reference.
other McDonalds speciality, Yukku-burgers with 90% more of beanpaste in your hamburger and 100% less meat in your order