A lady goes to a fast food restaurant and pulls up to the drive thru. The cashier informs her about a special that they’re having. “You can get the shakes for $1.99!” She pulls up to the food window and hands him $2.00 and asks, “Ready?”. She then begins to shake rapidly. “Why are you shaking ma’am?” The cashier asks.
“Because,” she replies, “I’m getting the shakes for $1.99! And for the extra penny, I’ll even throw in a twitch!”