Why is my code being printed from bottom to top?

Im making a anti afk script for my game so players dont get kicked it works and all but why does it read from top to bottom?

local player = game.Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()



local on = true


script.Parent.MouseButton1Click:Connect(function()
    if on == true then
    repeat
        print("I am on")
        wait(2)
        local part2 = Instance.new("Part", workspace)
        part2.CanCollide = false
        part2.Anchored = true
        part2.Transparency = 1
        part2:PivotTo(character:WaitForChild("Head"):GetPivot() * CFrame.new(0, 0, 20))
        part2.Name = "Part1"

        character:WaitForChild("Humanoid"):MoveTo(part2.Position, part2)
        until on == false


    end

end)

script.Parent.Parent.stop.MouseButton1Click:Connect(function()
    on = false
    print("Off")
end)
script.Parent.MouseButton1Click:Connect(function()
    on = true
    print("On")
end)