It's from that episode of The Simpsons where the audience is booing Mr. Burns. Hans Momans was like: "I was saing boo urns!"

Boo urns means that sucks or boo hoo.

An exclamation: to be displeased with a given result or situation.

Alternate spelling of boo urns.

Exclamation. A cheer for The Simpsons character Montgomery Burns. Often used incorrectly by Canadians to suggest disproval of anything, rather than approval of Burns.

Obviously, "boo" and "Boo-urns" are two different and mutually exclusive words.

An expression of frustration or dissappointment with a particular outcome, most often in reply to a statement made by someone else.

Alternate meaning: Burns (proper name).

1. no good 2. that sucks 3. bad

1)Derivitive of boo, exclamation of negative feelings towards situation, item, person, or comment.
2)Shouted in suport of Mr. Burns, while in a mob of onlookers

Alternate spelling of boo urns and boourns.

Exclamation. A cheer for The Simpsons character Montgomery Burns. Often used incorrectly by Canadians to suggest disproval of anything, rather than approval of Burns.

Obviously, "boo" and "Boo-urns" are two different and mutually exclusive words.

People who don't understand how to use the word or cannot understand the word's useage as it appeared on The Simpsons. Boo or boo-urns. There is no try.