Auntie Entitled was in a graduate degree internship one summer and came to Southwest Desert Region to stay with us (double income, no kids, new house without a back yard or a fence at that point).
She brought her oldest (adopted), my cousin - who was a very cute four year old.
Highlights - she complained about the car we loaned her while we adjusted our work schedules to go in to work together (not too bad - but still annoying). She took the GOOD towels from my linen closet to send to day car with Cousin for swimming lessons, that the day care lost. She didn't take the plain white towels.
She would go out for dinner several nights in a row while I had cooked dinner for four. The first time we went out to eat, she came home to find us gone, "thawed" a T-bone steak on high because she didn't bother reading the instructions on the microwave, cooked it, left what they didn't eat sitting in the oven until dry, and loaded the tricksy dishwasher & started it (I had told her NOT to start it, as I had to adjust the load or it broke glassware). I lost three glasses while running down the hall to the kitchen (she started it while we were home).
She would make long distance calls (1980 or so - long distance was expensive and NOT included in the monthly flat rate) and never paid for them - but didn't let me talk to her big sisters (Mom & my aunts) or her parents (my grandparents). She would come in to a house with the windows open (cool fresh air in the desert at night) and turn the A/C on then lower the setting to match the computer room where she was working during the day (very cool - she wore cardigan at work) - leaving the windows open (outside may have been a lot cooler than during the day but it was not cooler than the A/C setting).
Then she moved in with a "friend" from work who lived closer to downtown - saving her thirty minutes of driving morning & night and complained about us not wanting OUR car to be downtown at someone's house that we didn't know.......
Blonde Weasel - killed the house plant in the guest room because he left the blinds down all the time, tried to quiet a crying baby in a car by swatting at her (his arm was too short) but wouldn't pull over to let her get a dry diaper or a meal (BF, no bottles), and generally behaved badly enough that VorGuy cut off his oldest and dearest friend-turned-parasite. And realized that he'd been a parasite at least ten years earlier - he just hadn't recognized it back then.......his family didn't prepare him for that level of toxic.
There had been times from when they graduated high school together that could have told VorGuy a lot, but between being a military brat with few long term friends and them having been on the track team together - it took a LOT to open his eyes and strengthen his spine.
SIL who sent nieces with Grandma & Grandpa for a week in our summer time share without mentioning that they had head lice - but refused to allow their long hair to get cut. Not that happy with Grandma & Grandpa (aka Mom & Dad) but they felt rather trapped by having *promised* to take the girls to Disney.
Mom combed their hair out morning and night; their hair was kept tightly French braided; and their sheets & such were washed in HOT water, daily (washer & dryer in time share) - and twice after they left (before we did - due to travel time).
We did not invite them the next couple of summers........
When we did invite them again, they cancelled out at the last minute - after we'd arranged and paid for a larger unit (younger kids could share bedroom - older kids and MORE relatives meant we needed more space & more beds - bigger kitchen never hurts, either, with at least ten people expected instead of seven). We ended up with six people - and it was spacious, Did wish my parents had come, to see their great grandchild........but that was their loss, I suppose.
No one had bugs in their hair, either.