Jimmie Johnson swore he had no idea today is April Fool's Day. Same with Kyle Busch, who seemed appreciative that reporters warned him. And even the biggest prankster of them all, Kevin Harvick, claimed he had no practical jokes in mind for today – yet.

At least Harvick was able to share a memory of an old prank he pulled six or seven years ago. Although his "prank" sounded more mean than actually funny.

"We crushed (wife) DeLana's aunt's car with a monster truck one day while they were at lunch," Harvick said. "She came back around the corner with a monster truck in the field and we crushed her car. That was pretty funny."

Harvick said his wife's aunt loved the car, too – an '88 Pontiac Bonneville. She would have never gotten rid of it, he added.

"We made her cry," he said. "We did give her a new car (a Chevy Impala). We didn't tell her that for awhile, though. I didn't really think she was going to cry."

Harvick, who has also filled a car with bouncy balls and put crap (literally) in the office of right-hand man Josh Jones, warned he'd come up with another prank before April Fool's Day was over.

"Surely, by the end of the day I'll be able to think of something," he said.