Wife: "There's trouble with the car. It has water in the carburetor."
Husband: "Water in the carburetor? That's ridiculous."
Wife: "I tell you the car has water in the carburetor."
Husband: "You don't even know what a carburetor is. Where's the car?"
Wife: "In the swimming pool."
http://www.youtube.com/watch?v=LpFN39koSg4
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Teacher: "Give me a sentence starting with the letter 'I'".
Pupil: "I is-"
Teacher: "No, you must always say 'I am'."
Pupil: "Okay, 'I am the ninth letter of the alphabet'."
A professor attempting to inspire his students says to his class, "This week is your last chance to study for your final exam next Monday. Time is running out. The exam is now in the hands of the printer. Are their any questions?"Pupil: "I is-"
Teacher: "No, you must always say 'I am'."
Pupil: "Okay, 'I am the ninth letter of the alphabet'."
One student inquires, "How many questions will their be?"
Another student asks, "Will the exam require essay answers?"
A third wants to know, "Who's the printer?"