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1 definition by MrNickster

brentalfloss is a musician who puts lyric to retro-game music, like Punch-Out!!, Zelda, Final Fantasy etc with hilarious results. There is a high probability you will sing-along with him. He is hosted on ScrewAttack and is awesome. And yes, his name is spelt with a lower case b.
Sample brentalfloss lyrics

''Shapes made of four coloured blocks, like a T or a box, come down like falling bricks' (Tetris)

'I, am Mega Man! I got a motherfucking gun for a hand!' (Mega Man 3's opening music)
by MrNickster January 24, 2010