He is handling the money
He’s serving the food
He knows about your party
He is calling you ‘DUDE!’
Cake!
From the BBC:
http://www.bbc.co.uk/dna/h2g2/A193853
‘Dude’ is an exceptionally versatile word. Depending on the tone used, it can span a variety of meanings. It can be an exclamation of delight, an expression of dark horror, a cry of anger, a paean of love, and many other things besides. This word is not for use by the novice, and should be considered carefully if heard, to avoid misunderstandings.
‘Dude’ can be used many times in a single sentence, with only the tone and familiarity with the speaker to guide the listener as to the conversation’s meaning.
There are many different stories surrounding the word’s origins. One such story claims that it was created by Oscar Wilde, as a combination of the words ‘dud’ and ‘attitude’. Another claims that the word was formed by cowboys in the West to refer (unfavourably) to city dwellers1. Of course, none of these possible origins change its current complex maze of meanings one whit.