Detachable Car Headrests
During road trips, we’re sure you have to sit in the rear as well. Maybe you didn’t have anything better to do back then than toy with the headrest right in front of you! Who’d have guessed you could actually get it out? This was done by car designers to ensure that the metal bars could shatter the windows in an emergency.

Detachable Car Headrests
Solo Cup Lines
You should know that red solo cups aren’t just for beer pong. There are literally horizontal lines that will tell you how much alcohol you’ve consumed. The first one denotes a single shot or ounce. One glass, or five ounces, is the second. The last one denotes a full bottle (12 ounces)!

Solo Cup Lines