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1.
A noise that is made when something is not quite funny enough to laugh at, but it needs some kind of recognition that it has been said.
It can also be used when you don't have anything to say, but don't want to be rude by not saying anything.
"That movie was so funny"
"herh"
or

"I love the park"
"herh"
by TASHY! October 20, 2009