Yes, that's what I meant by in error. I wondered if it could be intentional.
A phrase of a similar ilk that I often use on purpose:
"We'll burn that bridge when we come to it."
Claes Wallin (韋嘉誠), sazius likes this.
Although, recently, I used the phrase "cow-orking facility" intentionally on a slide for a talk as a joke, and multiple people reported it as a typo.
I changed it to coworking for the next time I gave the talk. I suppose given that I do often have true typos on my slides, I can't get away with intentional typos as a joke.
Speaking of intentional typos, "break" for "brake" noted in https://www.reddit.com/r/rust/comments/2ti822/rust_graydon_on_100alpha/cnzcgym and tangentially I salute the intentional typoist http://venge.net/graydon/ 100% seriously and vehemently.