Santa Claus knows all.

Whether it's little boy's and girls or teenagers to adults, St. Nick keeps his list.

The 2012 NFL season has been a hot spot for grown men to ruin their chance at being on the big guy's 'nice list'.

Don't get me wrong, there are players who made the 'nice' list, but the 'naughty' list seems to be making some ground.

From constant flagrant fouls to obscene gestures, these players have been embarrassing themselves and their fans this year.

Like Santa, we've seen enough this year to decide who belongs on his naughty list.

Let's take a look at five NFL players who should be expecting coal in their stocking come December 25th.