It's Nam' Baby

Two boys engage in a playful water gun battle inside a house, with one boy in the foreground aiming a blue and orange Nerf-style blaster while the other, further back, aims a blue water gun. The camera perspective shifts from a first-person view of the blaster to a third-person view of the second boy aiming his weapon, with the setting appearing to be a home hallway near a staircase and a doorway.