When you are impressed by something someone says or does and you try and be cool but fail.
Example:
Girl: *does a backflip*
Boy: Dayuuum!!!
Girl: *looks at boy in a strange way as if they are a disease*
Da•yuuhm
(Slang)
Definition: Any particular happening that comes as a surprise to one.
"I got a 100% on my math test: DAYUUUM!"
5👍 6👎