A made-up word that a mentally-challenged and phenomenally maladjusted young man on Yahoo Answers likes to throw around.
Usually accompanied by his other nonsense words, such as "mainstreamphobia" or "normo" which he uses to describe people with normal intelligence whom he antagonizes.
You're a normo and unnice because you told me that I'm mean after I told you to go fuck your mom!!!!
The torrid result of when a woman has eaten a fast-food burger saturated in grease and laden with ketchup, onions, mayo, and cheese. After she's digested the food, the resultant odor eminating from her vagina could quite possibly kill the frail or infirm, though it may also induce hunger and a desire to locate the nearest McDonald's in some people.
"Dude, I was making out with her in my Z28 when all of a sudden I was like 'oh shit, did I drop a burger in here last night or something?' Then I realized it was burger cooch."
"I went to go down on her, but as soon as I got those pants off it was like I was face-to-face with a rancid fucking burger. She had burger cooch, man. Oh, jeez, everything still smells like onions to me..."