College kids are usually christened with a liquid that comes from a red plastic cup known as the Solo Cup.

But after all this time, we’ve finally discovered that those little lines you use to see if someone is cheating at beer pong actually stand for something: Measuring whatever liquid you decide to drink from it!

A photo posted by GuysGirl (@guysgirl_) on

How I’ve spent my entire adult life not knowing this is beyond me. But the secret is out!