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!"

Yo mamma so stupid she puts a piece of paper on the TV and says, "I'm watching paper-view."

Yo' Mama is so stupid, she taped toilet paper to her TV set for free paper view.

Yo'Mama is so stupid, she threw a baseball at Batman.

Yo mama so stupid I told her I was going to the Super Bowl and she told me not to forget a spoon.