Five: One to change the bulb and four to pull the ladder out from under him/her.
or
Twenty. One to hold the bulb, two to turn the ladder, and seventeen on the guest list.
or
When it came time to pay, the skunk didn't have a scent, the deer didn't have a buck so they put the meal on the duck's bill.
or
Chile.
or
it was Wedgie Kray.
or