Albus Potter and the Meeting of my Younger Parents

What would happen if James Sirius pranks Albus Severus and Scorpious Malfoy? What would happen is said prank went wrong? What would happen if Albus and Scorpious were stuck in the past with teenage versions of their parents? What exactly happens when parents don't agree with their relationship? Will they tell them all they know about the war? Slash Fluff Adopted from HeIsNotOneOfUs