A person who royally sucks at simple tasks

Minced and reformed beef in a vaguely disc-shaped slab, cooked, and placed inside a bread roll, possibly along with various vegetables and sauces. Usually the meat is sourced from cheap offcuts and has a higher than average fat content. That being said, there is something distinctly refreshing about biting into a great greasy burger once every so often.

Variation; Burger-Family A mildly derogatory term for people or families in Pakistan (or India), or in Pakistani (Indian) communities abroad that are "culturally-challenged" in they barely get by in a local language and speak only English fluently and are a bit oblivious to native customs and norms surrounding food, music, clothing, celebrations etc.

Not to be confused with the food substance, a burger is a slang word that is said for the purpose of being insultive, many of its meanings include -

idiot
slow to respond
moron
ugly
disgusting
filthy
cunt
smells

Can be very offensive, although often goes by unnoticed because of its sharing of the word with the food product.

Origin thought to have been S. Africa although this has been challenged and Australia is the believed birth of the word.

what they say in the cosby show for a fine lookin lady

A womans vagina when her legs are close together

The bulging vagina and lips seen from behind (between a woman's legs) when a woman is lying on her side... which looks like a bun with a beef patty between.