OH has reminded me what we did to his DF and DFs Lady Friend (partner isn't right, girlfriend definitely isn't they are in their 70s.. Lady Friend will have to do)...
You need some context: DD is a rather softly spoken music nerd who is at heart a rather scruffy cheapskate sort of a man, a very talented musician, wildly enjoying his old age...
LF is a very NAICE lady of advancing years, who likes listening to talented musicians and was DF's sort of groupie for some years. She's from a rather posh hyphenated part of the south, seems nice from what I can tell but HKLP... mm.
They visited us for OH's birthday, took us out for a meal and had asked OH to book a table at his favourite restaurant, anywhere was fine, LF would eat anything and OH knew his DF's tastes...
We went to a burger restaurant, not late at night, serves a range of foods but quite American which we all like...
And LF did not. But amusingly, DF did not like to be clear that he likes it, because it turns out.. he's pretending to be MUCH classier than he actually is...
The fart jokes were down by 90% and I could see visible wincing from her when one did slip out (har har), he wiped his beard clean far more often, there was just much more effort to be nice going on all round really..
But he would not be honest and tell her he likes this sort of food and not posh fancy food, he is too mean to pay for posh fancy food, he does not LIKE posh fancy food... he let her think it was MY insistance that we went there...
So next time they came to visit... I asked him in front of her which option he'd like... happy friendly burger diner that he loves (and has asked to go to prior to LF existance)... or EYE WATERINGLY expensive michelin star place in a super high end local hotel...
He couldn't admit there was no WAY he was paying for the posh option, but he couldn't agree to the dirty burger option... I actually thought I might have broken him, I really did, the squirming was intense!
He did just about squeak out that we'd go to the posh place and then I rang and they were fully booked (I knew they were, its like a six month waiting list to go there but he would not know that as hes not remotely into that sort of thing) so I let him off the hook.
At least this time LF didn't give me daggers all night and I got to enjoy her attempting to eat a burger and loaded fries whilst holding knife like pen (astonishing really!).