What Goes BANG in the Night

One dark, stormy night I could hear a loud thumping noise coming from my parents bedroom. Figuring it was just my parents getting it on, I simply put my pillow over my head and tried to GO TO SLEEP. The next morning, I walked downstairs and found my Mom was making herself a cup of coffee. I walked up to her and asked, "Mom, why do you have to be so loud when you and Dad are fooling around?" My Mom looked at me with a puzzled look on her face, "Honey, your Dad is in Vegas on a business trip." My eyes grew wide with fear. "THEN WHO WAS FUCKING MY MOM!?!?!"