This is meant to be light hearted
I know of two people who hold themselves in really high esteem, can really talk the talk but when it comes to delivery cannot anywhere near carry out the task, it's almost so bad that it's comical.
Person 1: Calls herself an educator, talks about her many years experience in teaching, waxes lyrical about the importance of pedagogy, techniques in child rearing, years of parent/child therapy and interventions. There is nothing she doesn't have experience with wrt to children and education. Very eloquent, upright, sounds as if she really knows what she is talking about, is very critical of others and quick to dismiss/slam their ideas/input.
The reality: She cannot deal with children at all. She tried (and failed miserably) to start group classes for children and it became extremely apparent she couldn't cope with the (well behaved) small group of children, she was literally shaking with anger and at the end of the first lesson (which was supposed to come with the latest teaching resources) informed us parents that our children all needed specialist help as they all have varying types of SEN
There were no resources as she was very busy the day before so couldn't organize anything. The next lesson a parent sat in with her and queried her teaching experience. She went ballistic and went into this 'it's a pathetic, uneducated myth you have to be a qualified teacher to be a good teacher' rant. All of the children were pulled out before the end of the course as she was so bad tempered and incompetent. The lesson was supposed to be 90 minutes each time but when I asked what they had been doing (as there was no written evidence) she did that cocked head, I-feel-sorry-for-you-because-you-are-so-stupid look and said that a child of their age only had a 7 minute attention span therefore teaching would only be that long. This was years ago but she still talks in exactly the same way but thankfully most people have seen through her. She actually does not have one teaching post on her CV (which is mostly empty as she has been a SAHM for nearly 20 years!)
Person 2: A lady in a post grad course I was on. Looked and came across very corporate, went on about how she was a CEO of a business solutions company. "I am the solution" was her tag line. She was very nice, came across very well so when we were put into a group project to do a presentation everyone jumped when she nominated herself, whilst rhyming off her experience and skills.
The reality: She was so ditzy and clumsy with academic work, she would text us at the time we were supposed to meet for group work saying she had just woke up and would be late. She had also self appointed for taking minutes (as she had the most experience) but lost them every single week. We all had a section to do which was going to be rolled into one presentation (that she was presenting) and on the deadline she announced she was on holiday and would see to it when she came back, which was days before the presentation. We were all
but she assured us via email that all was fine, to trust her experience and she was so confident that we had all had faith in her. The day before the presentation we met up for a rehearsal and she announced that she had left her USB on holiday and all of our work had been lost. Don't worry she reassured, she would get it all done that night as she was used to working within tight deadlines and was great at pulling things off under pressure. On presentation day she turned up looking a million dollars, dressed in a suit, had her hair done whilst all the others were in jeans. I genuinely thought we were going to score really highly. She made a complete mess of the presentation, the power point was a complete state, she had forgotten to put references in, she kept stumbling over her words and it didn't look good in any way, shape or form. I kept looking over at our lecturer who had a face of both horror and pity. At the end of the presentation she stood down from the lectern, turned to the group and with a completely straight face said she had pulled it off really well. We all stood like 
Please regale me with your stories.