[Flaming Conservative]

What are you up to, @sshole?!

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That’s “Up to what are you?” Which, of course, sounds ridiculous! “Wutchadoin?”, is obviously the best choice .

[glennaro]

"Wutchadoin" is great! Even better with the addition of the noun (in certain circumstances, of course)

Oh, and as an aside, though not a grammar text but rather a guide on pronunciation, and although out of print (but still available at online swap shops, etc.) Charles Harrington Ellster's "There Is No 'Zoo' in 'Zoology'" is sure to make one a real PITA in social circles. Check it out.

Cheers!