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.
egoist: everybody loves my good looks person 2: congratulations egoist: everything i have is better from the clothes i wear down to the car i drive
person 2: aww shucks
egoist: i'm not egotistical
When a guy thinks that they have the biggest balls out of everyone, often talking about and referring to them. The real size of the testicals are often unknown.
George: God damn, a helicopter could use my balls as a landing pad there so big
John: Fuck you George, your egotestical. Always talking about your balls
People who post countless arrogant and lame status updates on FB. Often self-proclaiming that they are the "luckiest people". However, said people should eliminate their excessive time posting and more time working onrelationships with their straying significant other. Duh, why else do you think he bought you that nice stuff?
ie: "My friend, the egotisticalposttwitt, has just updated her status again. When will she learn that diamonds, pearls and trips all at once mean her husband is cheatin' on her sorry ass?"