You go to a university computer lab on tuesday night, at about 11. Make a shitty song on garage band, and then go to newgrounds on all the computers in the lab (should be 40+) Submit your song-- BUT DON'T VOTE ON IT YET!
At 11:55 go to the song on all the computers and line up all the cursors over the '5' button. At 11:57 run around and click all the mice.
Also, just before doing this you can vote zero on all the other submissions using the same method, but be sure to do this before the crucial 11:55-12:00 period. This will also increase your security on the top five.