How Old Are You?

A student asked his teacher how old she was. She promptly said, "39 and holding." Then the student asked, "Well, then, how old would you be if you let go?"

Discussing Grades

A high-school student came home from school seeming rather depressed. "What's the matter, son," asked his mother. "Aw, gee," said the boy, "It's my marks. They're all wet." "What do you mean `all wet?" "I mean," he replied, "below C-level." 

Farts With Lumps

The teacher asked little Johnny to use the word " definitely " in a sentence. Little Johnny replies, "Teacher, do farts have lumps in them?" The Teacher says, "Of course not Johnny," To which Johnny replies, "Then I have definitely shit my pants".