i used to always keep old milk in my locker then one day some little freshman girl ratted us out. the ap guy was like "if i find any milk cartons around the school, you and your 'crew' are all getting suspended
I found a pack of M&M's last weekend before washing my jacket. I can now tell you all that an open pack of M&M's has a lifetime of more than 7 months, while still being edible.