Quiz

Well, since no one wants to guess, I'll try to guess again. Two guys are playing Russian roulette. One loads two bullets consecutively into a six-chamber revolver, spins the cylinder, puts the barrel to his temple, and pulls the trigger. There is no shot. After that, he hands the weapon to the other and says: "You can spin the cylinder, or you can just pull the trigger without spinning." What should the other guy do: spin the cylinder or not? An answer without explanation will not be counted.