Fire-Eater

A juggler who eats or pretends to eat fire. (Also the nickname for someone who is able to do a great amount of work in a very short time.)

“Richardson, the famous Fire-eater before us devour’d brimstone on glowing coales, chewing and swallowing them.” John Evelyn, Diary (1700).

Scale of 1 to 10: 2. That’s entertainment. Painfully steep learning curve.