If you're a gamer and haven't heard of this famous button sequence, you likely fall into one of two categories: one, you've got a problem with lying, or two, you've got some sort of amnesia going on… and you might want to get that checked out. Or maybe you're just really good at Contra.
First executed on an NES game (not Contra!) developed by Konami in 1986, the Konami code (and slight variances of it) can now be inputted in more than 125 different computer, video, and arcade games-some of which aren't even developed by Konami, the company that created the code in the first place!
At first the Konami code was strictly used to grant your character something very beneficial, such as weapon power-ups or a boatload of extra lives, but over time, the special button configuration has served other purposes, like providing humorous easter eggs that could only be discovered by inputting the Up-Up-Down-Down at certain times in the game. And it may or may not leave your character in nothing but his underwear. What!? The code has even reached pop culture, appearing in comics, TV shows, music, tattoos and more.