Norman and Barry

Norman and  Barry got married in California. They couldn't afford a honeymoon so they went back to Norman's Mom and Dad's house for their first married night together. In the morning, Little Johnny, Norman's little brother, gets up and has his breakfast.
As he is going out of the door to go to school, he asks his mom if Norman and Barry are up yet. She replies, 'No'. Little Johnny asks, 'Do you know what I think?' His mom replies, 'I don't want to hear what you think! Just go to  school.'
Little Johnny comes home for lunch and asks  his mom, 'Are Norman and Barry up yet?' She replies, 'No.' Johnny  says, 'Do you know what I think?' 
His mom replies, 'Never mind what you think! Eat your lunch and go back to school' 
After school, Little Johnny comes home and asks again, 'Are Norman and Barry up yet?' His mom says, 'No.' He asks, 'Do you know what I think?' His mom replies, 'OK, now tell me what you think.' He says: 'Last night Norman came to my room for the Vaseline and I think I gave him my airplane glue.'

Little Johnny Rhyming

Legendarily naughty Little Johnny sat in class quietly as the students were composing a poem with their teacher. When she asked for an F-word that rhymed with "duck" he waved his hand feverishly. The teacher frowned and passed him by. No kids, however, could offer her a solution. Finally she glared at Johnny and called on him. Johnny put on his devilish grin and said, "An F-word that rhymes with duck is.... fluctuation." The teacher blurted out, "No Johnny, that's sucks! I'm so sick of telling you what a little frigging asshole you are!"

Rectum

Johnny's teacher asked the class how their weekends were. "Horrible," said Johnny. "A car hit my cat in the ass!" "Rectum," said the teacher. "Say rectum." "Rectum? Damn near killed 'em!"