Professor: "Why do pimples make horrible prisoners?"
Student: "Because they keep breaking out!"
Why couldn't the sailor learn all the letters in the alphabet?
Because he spent a lot of years at 'C'...
Wife: "I am going out for two hours. Do you want anything?"
Husband: "No, that's enough."
Teacher: "School starts 8am, young man. Why are you coming in at 8:30am?
Student: "Sir, by all means, you can start the class without me. No need to wait."