533
Regret.
(slrpnk.net)
Alt text: Meme caption: "When you forget to bring your reusable bags to the grocery store", below is an image of Dexter from Dexter's laboratory weeping as he strokes a picture of the earth, saying "I have failed you!"
Fear not for there is still enough room in my backpack for some essentials. I may have to carry my water bottle in hand, but this is a sacrifice I am willing to make for the greater good.