an explative, not unlike whoa. It is a more emphasized version of the word "damn" when it is used in the same way.

Dayum, interchangeable with damn

A slang used for the word damn. Often used by guys when they see a hot girl, or when they get busted.

what u IMMEDIATELY say when u turn around an theres a fat bitch right behind u an u get scared

Unbelievable. A great big suprise.

You would use this interjection when you see a fine piece of ass. As this girl walks past you, you must lean back and exclaim this this phrase with impeccable timing. This is especially useful after watching a fine lady such as Danielle Conklin pass by.

a word that black kids (and white kids who copy everything black people say) use to sound like a over annunciated word of "damn." Usually used when somethings extremely exciting or calls for an out burst of "DAYUMMM" instead of just damn.