That's fair. I might be misremembering, but wasn't the "flames at the side of my face" bit, probably the most quoted and referenced part of the film, improvised?

Oh, I don't know! It was one thing I was bummed about is a remember more Madeline Kahn that there was :/ I love her.

That’s what I’ve always read. I’ve long suspected a lot of the better bits were also improv