Like blood, only without the moral issues and more likely to cause serious bleeding in a brain as opposed to being the substance bleeding out of the brain. A watered down, sissy's version of "NoDoze".
Sad. This page majorly needs to be rewritten and should at least mention the good things in coffee (like Caffeine), where else you can get a Caffeine fix (CocaCola, MtDew, chocolate-coated-coffee-beans), and perhaps the numbers 0xdecafbad and 0x0ac0ffee (Oh, A Coffee! 10.192.255.238, the original metanet address of zcat(1) 's main machine).
See also NotToBeUsedAsASubstituteForSleep