These lines are actually parallel even though they appear to curve.
These lines are straight as an arrow.
I bet you get this one wrong!
Do you think the red lines are wavy? Well they arn't.
Once again, these lines are straight as an arrow.
Can you tell us what vertical line is longer? Post your answer in our comments.
You might go through pencils a bit faster though.
Just when you thought the Old Spice commercials couldn't get any better, they did!