Sometimes, being babied and pampered feels really nice as you know that there’s a whole person out there who cares for you. However, when a full-grown adult starts acting like a baby constantly, it can get on anyone’s nerves because, let’s admit, it’s really annoying.
If you agree with me, then you will definitely be able to relate to the original poster’s (OP) frustration when her 27-year-old sister permanently adopted “baby talk” in her communication. Irked by it, the poster finally snapped and told her to talk like a normal person!
More info: Reddit