Someone who think very highly of themselves and worries about their ego all the time.

The act of putting someone else down or insulting them to boost one's Ego. It is most commonly done through pointing out the other person's shortcomings.

Person who is poor but acts like he/she is royalty! Treats hospitality workers and restaurant serves like shit; making outrageous demands and embarrassing their dining partners. Serious delusions of grandeur, cheapskates and a know it all. "DO YOU WHO I AM?" Yeah, we know who you are; you are a bitch ass coward who acts like you are better than everyone, because you are a loser and a coward in real life! They can't keep a mate and blame the world for all of your failures. If they have a mate the treat them like doormats and may end up being murdered for the life insurance money..

someone who would only have sex with themselves.

cody from big brother season nineteen.

If you have to look up the definition of this word you are already egotistical.

egotistical is a user on the popular pool and snooker websites; funkypool and funkysnooker. The user's play often leaves opponents mystified and stunned.

Many believe egotistical to possess magical powers that allow him to perform so well at these games, leading to "egotistical" being used as a standard of play (see example). This use however is generally accepted to mean a slightly lower standard of play than that of the user egotistical, of course.