What is Billy Crystal?
1.
adj: Describes someone who struts around town like he owns the place; Someone who thinks they're the cock-of-the-walk.
"Get a load of this Billy Crystal that just walked into the room...he'll probably ignore us all."
See
2.
A person they show everytime a Yankees game is on television. He may have done something funny at one point, but that was too long ago, or too mediocre for me to remember.
It wouldn't be a Yankees game if we didn't get a shot of Billy Crystal sitting in a luxury box.