To appraise someone's appearance by looking then up and down.

A yo-yo is an adjective describing a person who is either very stupid or ignorant.

When you let a nice fucking turd roll out your asshole about halfway and then proceeding to suck it back in

A girl that keeps returning for the D.

When you sit on a toilet and your balls hang so low that they hit the cold water and shrink back up. As they rise they warm backup and drop back down into the cold water causing them to shrink back up again.

When you are having sex-or whenever really, you grab your nipple and pinch real hard, and start moving your hand fast like you are flinging a yo yo.

A woman sporting an extremely large cameltoe in an international airport!