Mary and Fred get married but can't afford a honeymoon, so they go back to mum and dads for the night. In the morning, little Johnny gets up and has his breakfast. As he is going out of the door to go to school, he asks his mum if Fred and Mary are up yet. She replies, "No". Johnny asks, "Do you know what I think? " His mum replies, "Never mind what you think! Just go to school."
Johnny comes home for lunch and asks his mum, "Is Fred and Mary up yet?" She replies, "No." Johnny says, "Do you know what I think?" His mum replies, "Never mind what you think! Eat your lunch and go back to school."
After school, he comes home and asks, "Is Fred and Mary up yet?" His mum says, "No." Johnny asks, "Do you know what I think?" His mum replies, "OK! What do you think?" He says, "Well, last night Fred came in for the Vaseline and I think I gave him my airplane glue."