A disorder characterised by an individual buying a large meal only to lose their appetite and throw most of it away.
1: (Throws away a double quarter pounder meal after only eating a couple of the fries)
2: "Are you serious? Why did you super-size it if you weren't gonna eat it you f**khead?"
3: "Man, shut-up! He has buylimia!"
2: "Oh Sh*t dude! I...didn't...know."