Many would agree that the actual definition is not any different from what you were thinking.Real Definition: an air or gas vent, esp. one to carry off fumes from a tunnel, underground passage, etc.
This one is my #1 simply because it is the actual name of a person. I've heard of hancock, but this one is worse.
Real Definition: French writer and a founder of the realist school of fiction who portrayed the panorama of French society in a body of works known collectively as La Comédie Humaine.
What are you thinking about you sicko.Real Definition: to make or use gestures, esp. in an animated or excited manner with or instead of speech
I see you smiling.Real Definition: cleaning rod for the barrel of a firearm.