Billy: My disposable contact lenses. They're great for camping!
Jennifer: Cool! Each contact comes in its own saline solution?
Billy: Yep. They're prescription contacts with UV protection.
Jennifer: Wow! How high-class...a new pair for each day...
Billy: You just pop'em in in the morning, take them out at night, and then throw them away. No cleaning!
Jennifer: Cool. So are you near-sighted or far-sighted?
Billy: Near sighted.