Dude, go the fuck away, would you please?
Very strange sentence, especially by adding "would you please?" in the end.
What are you trying to accomplish with that sentence? If you want someone to leave, you should end it after away.
"Dude, go the fuck away!" <-- Stop there.
Adding would you please makes it a bit ambigous.
Do you really want him to leave or not?
What is your intention?
Discuss.