Concerning nicknames...
1. Generic nicknames. A guy is both Italian and with a "greater surface area" than average. Therefore he is "The Boss." A girl has blone hair and tans a lot. Therefore, she is "Barbie." BE CREATIVE WHEN GIVING PEOPLE NICKNAMES! Seriously, one could fill a sports area with all of the men in america known as "The Boss."
2. When nicknames are person's real name + celebrity's last name. So your friend Amanda smokes crack and loses custody of her kids to her wigga boyfriend. Hmm, how about "Amanda Spears"? Ahhh.
3. When "Baby" is used as an actual name, without behing prefaced by "the," "your" or the like. "Come in tomorrow between 9 and 5 for great bargins on clothing for Baby." NO! "clothing for your baby!" This might be one that I need to have kids of my own for it to magically get better, but seriously this one makes my skin crawl.
4. People who buy an animal, give it a name, and then only call it "kitty" or "puppy" or "sweetie," and the original name fades over time. IF YOU WANT TO CALL YOUR CAT "KITTY," THEN YOU SHOULD HAVE NAMED IT KITTY!!