Puzzling Beatdown

Currently featured in "AFaith's Unofficial Account BDay Event" 

Across
1. I prefer __. : sudoku
6. Don't __ about your impending doom.: whine
9. "Mama said __ you out!": knock
13. "__ it", Cheerleader movie: Bring
14. If that mockingbird don't __: sing
15. My skills will make your head go "__-a-ling!": ring

Down
1. That's it, time to __ it down, power off.: shut
2. This beatdown's gonna make you sick, __ cough.: whooping
3. Opposite of a winner: loser
4. I gotta (lend a) __ it to you: hand
5. Competition over: finito
7. Drowned you faster than quick __.: sand

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Update (11/20/12)
Yay I won! So blessed. Was considering switching Down lines 4. and 5. but I'll leave as is for nostalgic's sake
"Invalid Post"  

Original Prompt:
"Invalid Post"  
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Image credit: http://thebrooklynink.com/2012/03/20/43139-crossword-lovers-battle-in-brooklyn/