I always thought Brad Paisley was the king of road pranks, but it looks like Tim McGraw might give him a run for his money.  Tim decided to spray paint Luke Bryan's jeep while Luke was on stage performing on Tim's "Emotional Traffic" tour.  Thankfully it all wiped off and saved Luke from having a heart attack.

After watching Tim's work I'm thinking of Brad and Tim ever toured together the pranks would be legendary.

Watch Tim's prank of Luke