1. To have a visibly exaggerated idea of ones own skills, talents, or abilities.
2. To exhibit a grotesque amount of undue and unfounded pride for a
skill or ability which is
actually mediocre.
Excellent examples of people who are really bad showboaters would be that 'Lord of the Dance' blockhead
Michael Flatley, the ludicrously posturing Sarah Brightman and her bloated ego, and the
Queen of the Showboaters, that swirling black hole of talentlessness herself - Celine Dion.
"This was our one chance to get rid of tha showboating Canadian wench!" - Peter
Griffin, Family Guy