Ohhh yes...
The three worst offenders (rant-wise) in my family are my father, my mother-in-law, and my grandmother-in-law (who passed away recently, but I'm including her because her list is loooong). They rant about . . .
My father:
- The Democratic Party. He loathes the Democratic party, and, in particular, Barack Obama, Bill Clinton, and Hillary Clinton.
- Anything that the Catholic Church considers a sin. Abortion is murder, sex outside marriage is evil, a married couple shouldn't use any birth control other than NFP, etc.
My mother-in-law:
- The Republican Party, especially the Tea Party.
- The fact that she will never be a grandmother. (Yup... should've thought about that before you decided to have only one kid. Not everyone wants children, yanno, and we're not about to crank one out just for you.)
- "Undercooked" food. For beef and lamb, anything less than well done is "undercooked" and she will rail on and on through the entire meal. Fish must be so thoroughly cooked that it's dried out. And heaven help you if you mention sushi! (I had to school my husband in the enjoyment of sushi and medium-rare steak.

)
My grandmother-in-law:
- The Republican Party, especially the Tea Party.
- The fact that she would never be a great-grandmother.
- "Undercooked" food (see above).
- Red meat at all.
- Onions and garlic. (She's been known to chew out waiters reciting the specials of the day if said specials contained any onions or garlic - "Oh, I can't eat THAT!!"

)
- Food with any flavor, sauce, or seasoning, even a sprinkle of black pepper. All her food had to be not only thoroughly cooked but also dead plain.
- Alcohol. She probably wept bitter tears the day the 21st Amendment was fully ratified. If the five of us (GMIL, MIL, FIL, DH, and I) went out to dinner and ordered a bottle of wine, she would not only decline (ok, she wants to abstain, that's her choice), but also spend the entire meal railing about the evils of alcohol.


Now, if you want a trip down memory lane, both my mother and my MIL will gladly provide one. MIL's stories are mostly bitter ones about how her parents treated her brother like gold and treated her like dirt. Mom's stories about her childhood in India are actually interesting.