My Golf 101 class was taught by Fred, although he left it to members of his golf team to do most of the actual lessons.
Near the end of the semester they pull out the video recorder to show us what our swing looks like. They get about 3 minutes of me and then pull me over to look at the swing.
Freddie begins critiquing my swing, giving tips and pointers. As a 20- year old that clearly knows everything, I listened patiently for a bit before blurting out something like, "Yeah, but did you see where those shots ended up!? 150 down the middle! I'm not changing a thing until I start slicing it again!"
To which he laughed, and left. Postscript: I started slicing again about five minutes later and haven't stopped since.