A look at this week's top-rated websites from StumbleUpon, recorded on December 3.

This week's selection includes suggestions about why human's can't walk in a straight line when blindfolded, an optical illusion where one lady's arm appears to be the naked body of a second lady, an article about how to ditch your friends and disappear from your current life, a cartoon about the hardest part of any game, and a video of a 14 year old boy standing up for his gay-defending teacher.

1. Humans Can Only Walk In Circles and We Don't Know Why

2. A Proud Moment

3. How to Ditch Big Brother and Disappear Forever

4. Virtual Shackles - Expert Mode

5. Fourteen-Year-Old Michigan Student Awesomely Stands Up for Suspended, Gay-Defending Teacher