It's rude to point out someone's lazy eye.
Janet meets a person for the first time and notices that they have a lazy eye.
Janet wants to talk to the person she met.
Janet just ignores the person's lazy eye and makes normal conversation.
Janet tells the person she met that their lazy eye is weird because she can't tell where they are looking.
The person Janet met starts to feel comfortable around Janet and enjoys the conversation.
The person Janet met feels really embarrassed by Janet's comments about their lazy eye.