Misc: what type of humorous verse might begin 'there once was a man from nantucket'?

Questions

Joseph & Etienne Montigolfier, inventers of the hot air balloon, first believed that their balloon didnt rise due to hot air but an invisible gas given off by fire. What did they name this gas?

Julius Caesar & Napoleon Bonaparte both suffered from what?

June of 1968, Dr Benjamin Spock is arrested for aiding & counseling _____?

'Khaki' is hindi for?

Kiwis are the only birds that hunt by the sense of _____?