Sarcastic/Realistic

The other day Mr. Cordero, our Computer's teacher, was telling us how his wife takes things very seriously and that he was very sarcastic.
Mr. C: "For example. If I said "Oh go jump off the roof" my wife would say "What?! Why?! I thought we loved eachother!!" 
It was funny. He was also talking about his hair and how he was losing it and this kid he knew for a long time made a comment about it. 
Kid: "Do you know what my family would call that part of your hair? It's called a peninsula that will soon become into an island"  It was hilarious.