I’m sitting in a presentation right now. The speaker just asked for a show of hands of those who are familiar with <blah>, and 90% of the audience lifted their hands.
He then followed it with…
OK. I know you’re already familiar with this [the content on a particular slide] so I won’t bore you with it
signaling that he would move right along to the next slide.
<the part I hate>
But then the speaker spent the next 5 minutes talking about the content on the slide that he wasn’t going to talk about.
</the part I hate>
Damn, I hate it.
Move on! Be nice to the audience.