Spoken whenever someone is flat out denied and followed with a finger wag, whether it be getting a shot blocked or getting turned down by a friend for a beer. For added effect, the speaking of the word should be grunted with a frown.
"Hey dude, can you give me a beer, I'll owe you one."
"Dikembe!" (finger wag)
The first name of NBA player Dikembe Mutombo. Possibly the best shot blocker in the 90's/early 00's.
Dikembe swats another shot!