Fierce Hoor.

Sneaky, especially in business transactions.

1. Please leave my company

2. refusal to answer a question or request

A disruptive person

e.g. "sit down and quit bein a Yahoo" / "pack of Yahoo's them!"
Go away, leave me alone - e.g. "Would you ever hump off?"
A person who is not liked.

Not sharp at all, actually very slow - usually used to insult someones intelligence.

"That fella there is as sharp as a beach ball"

after a 1930's quasi-fascist group