a girl with abnormally large tits, generally a friendly term said jokingly. She doesn't show them off though, and is very modest. Titzilla's a pretty good friend to have around. She's kind of a spaz though. But you like her anyways.
A guy with abnormally large nipples. This name is usually used during a childishname calling fight. Also can be used to describe a guy that is a major douche who happens to have large nips.
Someone who tells you every detail of their upcoming vacation for days, sometimes week before they leave - to the point where you can't wait till they're gone.
Its so nice that Sue is on her trip - she was tripzilla for 2 weeks - I know exactly what she's wearing, where she's going, who she's meeting - almost like I'm there with her!