The 5-five-year-old has been telling, in various permutations, the interrupting cow knock-knock joke for a couple months. I've been trying to introduce more into their repertoire, with little success -- in part, I suspect, because mine are a little high-level and haven't really clicked as jokes. I think I need simpler examples, especially ones that don't require cultural context. Help?
Two data points for calibration: 1) Last night they made a valiant attempt at "orange you glad I didn't say banana?" -- a little mangled in performance, but still. 2) The best simple one I have right now is "Ghosts go" "Ghosts go who?" "No, ghosts go boo." That one sorta piqued their interests.