While chasing an annoying fly around the house today in an attempt to eliminate one of God's creatures, I was reminded of the time I called a radio talk show where the guest speaker was claimed to be an expert on house flies. In my smartass model airplane aerodynamicists' knowledge, I asked, "When a fly lands on the ceiling, does it do a half loop or a half roll?"
"Well, neither actually. It approaches the ceiling in a climb and lands on it's front legs, swinging it's body inverted."
"Uh... thank you."