The Konami Code
Go to the title screen and enter the Konami code, which you should remember is:
UP UP DOWN DOWN LEFT RIGHT LEFT RIGHT B A START
This will unlock some extra “wubs” which are worthless but cool to have. This is just like an Easter Egg.
Start and then finish the “A Dam Fine Rescue” quest and you will meet Sir Hammerlock. You will find him inside the Sanctuary and he will tell you about the “Mighty Morphin” quest. The new quest will require you to inject Varkid Cocoons with a special serum. Injecting the serum into a cocoon forces a large flying Badass version of a Varkid. Killing one yields 1900 XP. There is a glitch that lets you restart this quest over and over. Just keep killing all the cocoons, save the game, reload your game, and then repeat until you get as much experience as you need. This is over as soon as you complete the quest, so don’t do it.