Teahcer: THats right
Man to woman: Bleh
same woman to same man: realy? That is so sweet. Bleh
warning: this word must be used wisely and only in the most dire cases.
It is simply a noise to make whilest to tone of your voice gives an inclination of what you are talking about.
<dude 1 hits dude 2>
<dude 2 pokes dude 1 in the eye and sais "bleh..">
Hayley: T get me a baby swan! I want a baby swan!
Hayley: Get me a baby swan!
Reply: "Bleh" - I hear you and I feel for you, man!
In the uncomfortable quiet of a dying conversation, instead of farting, the word "bleh" just completes the situation.