Because if there be one moar, it'd be too farty!
Just one but he wants to do it thirty-two times and when he's done everyone thinks that his last lightbulb was much better.
One. No, two! No, four! No, eight! No, sixteen! No, thirty-two!...
Because if there were one more, it'd be two forty. (Too farty) This works much better when spoken out loud. The joke how Irish people pronounce "forty."
Because if you add even one more it gets "2 farty".
Because just one more and it would be two-farty
