30 more life hacks debunked

John Green of Mental Floss tested 30 different "life hacks" found on the Internet. About 40 percent of them really worked. The others were failures and semi-failures. He didn't test some of life hacks fairly, though. For instance, he tried making whipped cream by shaking cream in a plastic bottle. He only shook it for a few seconds though, which isn't long enough.