I always laughed even though maybe not the most polite jokes, but funny still is all the Little Johnny Jokes.
Finding one of her students making faces at others on the playground, Ms. Smith stopped to gently reprimand the child. Smiling sweetly, the Sunday school teacher said, “Johnny, when I was a little girl, I was told if that I made ugly faces, it would freeze and I would stay like that.” Little Johnny looked up and replied, “Well, Ms Smith, you can’t say you weren’t warned.”
Little Johnny came running into the house and asked, “Mommy, can little girls have babies?” “No,” said his mom, “Of course not.” Little Johnny then ran back outside and his mom heard him yell to his friends, “It’s okay! We can play that game!”
Little Johnny is always being teased by the other neighborhood boys for being stupid. Their favorite joke is to offer Johnny his choice between a nickel and a dime Little Johnny always takes the nickel. One day, after Johnny takes the nickel, a neighbor takes him aside and says, “Johnny, those boys are making fun of you. Don’t you know that a dime is worth more than a nickel, even though the nickel’s bigger?” Johnny grins and says, “Well, if I took the dime, they’d stop doing it, and so far I’ve made $20!”
23 Little Johnny Jokes That Will Make You Laugh (humoropedia.com)