So I baby sat my little sister the other day and as my mom was dropping her off she said "Layla said…

So I baby sat my little sister the other day and as my mom was dropping her off she said "Layla said the milk in her cup tastes bad so maybe just give her some thing else in there." Sure no problem. I go to open the lid to her cup and the smell is god awful, it looks like the same milk had been In there for weeks! I literally had to scrub her cup for about 30 min to get all the funky crusty stuff out! I'm still pissed about that! How the fuck can you pay so little attention that your child has had the same drink for god knows how long, and it's gone bad! Of course it tastes nasty.