what the fuck are you doing
The phrase "What the fuck are you doing" aka "What on fucking earth are you doing" is commonly used by the teenage population. You would use one or BOTH of these phrases if you see someone.. say.... washing their car in 20 degree weather. In this case you would have to make some modifications such as....
what the fuck are you doing by Andreuhh January 7, 2007
Get the what the fuck are you doing mug.