Holding cherry tomatoes between two Tupperware lids won't make them easier to cut.

The life hack: Instead of cutting cherry tomatoes one by one, fit a bunch between two lids and slice horizontally through them all at once.

Why it's bogus: On paper the idea seems plausible, but as John Green demonstrated for Mental Floss, the task is easier said than done. Tomato juice goes everywhere, and you won't end up with clean, even cuts.