Polygamy is common in Islam and sometimes causes stress or disturbance to the families involved and other time i causes bliss. Either way it's a big issue not only in Western society but in the Arab society.
Many times with any big issues there will be jokes about it.
Men like to rattle women. Women like to spite a man.
Men like to share a knowing wink with another man.
Woman like to raise an eyebrow to another woman.
ALL OVER the world.
Even Doctors like to joke with patients as Susie featured in her latest blog post on Susie's Big Adventure.
Some will say this is a joking topic or some will say it's demeaning and hurtful and everyone is entitled to their opinions.
My own experience with this comes from family members and friends and random conversations I've overheard in English and Arabic.
"No problem if he doesn't like my food he can always eat lunch at HER house instead and save me the trouble."
"I have a headache, don't you have another wife or something to go to?"
Man whispering to another man suddenly hold up four fingers and waggles them meaningfully and the other man bursts out laughing. *(if wife is there she's glowering in the background)*
"There's always Chinese, Russian, American, Egyptian." Man says to another man laughing. His wife turns to the other man's wife and whispers, "There is always divorce and then an American, Chinese, Italian, or Russian!"
Woman to Woman "Why let your husband marry an Austrian (insert any Nation)? Can't you die your hair blonde, braid it in two, wear Hiedi clothes, and yodel?"