Anytime they had a fight, one of the Shaunas could threaten him:

"If you don't start behaving and stop farting in front of my mother, I'll kick you and then you'll have another Shauna to deal with!"

"Oh no please Shauna #414, eight hundred and eleven are enough!"

(The joke is that sometimes husbands are henpecked by their wives, and an increasingly large number of wives would intensify that.)