Ok, first of all, you were going for 'little old lady who', right? ! Hence my ref. to strange alpine warbling (yodeling?). That's all besides the point, ... you missed the intent of the opening, so I'll do it again. You say to someone, 'I've got a great knock-knock joke for ya ....YOU START', to which the other person says, 'ok....Knock-Knock', and YOU reply, 'Who's There?' and then you get to observe the dumb puzzled look on their face as you've caught them unprepared. You will appreciate it the first time you tell it in person. I guess it doesn't work too well here. ?....... (Gee Whiz, Sister, I luv ya, but if I have to 'splain 'em, you take all the fun out of 'em)
lol. .............
SOOoooo, Why DID the chicken cross the road?