Beware the Yoplait

So I am trying to eat my fair share of dairy, being a nursing mom and not wanting to osteoporose myself because of it. My favorite vehicle for calcium these days is Yoplait yogurt, mainly because I can buy 18 cups of it rather cheaply (~35c per cup) at Sam's Club, vs. like 80c per cup at the grocery store here (because it is Seattle). I was so excited to eat my yogurty bedtime snack this evening that I ripped into a Peach one. First I tore off the lid, after noticing that it is supposed to "expire" on Sept 14th. I think, boy, that's a bummer, since I just bought this 18-pack YESTERDAY at Sam's. Then I lick off the lid, as is my habit, and crinkle my nose a bit because I think it tastes a little dirty. Why would that be, you ask? Well, because I am dumb and hungry, I dive right into the yogurt, getting two heaping spoonfuls in my mouth before I notice a big, furry, blue friend growing happily at the top of my yogurt cup. After spitting out the last mouthful into the sink, I get angry, because here I am stuck with 17 more cups of potentially MOLDY yogurt. Sam's better take it back tomorrow. Grrr. Just thought I'd share -- watch your backs, fellow yogurt eaters.