Knock knock. Who's there? A series of percussive sounds.

A series of percussive sounds who? A series of percussive sounds doesn't usually introduce itself, but I felt it was important to be precise about what just occurred.

Knock knock. Who's there? Dough.

Dough who? Dough-n't worry, I knead to come in.

Knock knock. Who's there? Sew

Sew who? Sew glad you asked, it's a tailor-made joke!

Knock knock. Who's there? Isadore.

Isadore who? Isadore a way to *bolt* this conversation open, or are we just going to *hinge* on this preamble without getting to the *pane* point?