Quoting Bob Wehadababyitsaboy:" It was the Oikos brand and i made sure i stirred it up really well, i guess it was just weird cause it ... [snip!] ... when the strawberries were like sweet. I bought the lime one though to see if it tastes better, but i haven't opened it yet."
Hmmm I didn't really think they tasted sour, they weren't expired were they lol? There have been a couple of times I didn't notice I bought expired yogurt until after I opened it and it looked and smelled weird. I will say, there is a brand around here I like much better than oikos...but I can't remember what it was called lol.