1. Perhaps I shouldn't joke on here about boiling water, it might be too steamy. 2. RIP Boiling Water. You will be mist. 3. How do you make holy water? You boil the hell out of it. 4. What do you get when your pour boiling water down a rabbit hole? Hot cross bunnies 5. One cannibal says to the other cannibal "hey I ate a missionary the other day and he gave me an upset stomach." The second cannibal says "That's too bad. How'd you cook him?" The first cannibal says "Oh, I threw him in the giant pot of boiling water like always." The second cannibal says "Makes sense. And what did he look like?" The first cannibal says "The usual. Brown robe, rope belt, sandals." And the second cannibal says "Well there's your problem. You boiled him, and he was a friar."
Bonus Related Joke: How does Moses make his tea? Hebrews it.