Soap and Toilet Paper is one used by my family. DS was probably 8 or so and he was late for dinner and had to make do with whatever was available, mouthed off to his Dad, who sent him to his room without anything to eat, He went, muttering "May as well feed me soap and toilet paper".
Used now when anyone has a hissy about something trivial

We have a two tone whistle,like put your lips together and blow, in our family. Whenever we are in a crowded place and hear that whistle, we know to gather.

Sorta lengthy. DS,DGS and me have a backwoods hunting and fishing cabin with no modern conveniences. A bedside handi-cap stool sans container along with a garden shovel to dig cat holes serves as our restroom. When someone says they are going out to dig a hole, the chore is obivious. There was once a run down Tex-Mex restraunt shortly before leaving the paved road. DS suggested we make the drive back for dinner there sometime. 30 minutes went by without much conversation other than about mud and logs in the road. 10yo GS said"dad,that cafe looks like a place where the food might make a guy start digging holes,I don't think I want to eat there".
That was some years back but "digging holes" still sends a clear message if one isn't feeling well or is suspicious of food or water.

Meldy, I know what you're talking about but I can only think mom and her good friend from FL use that language. I guess I'm usually the "Gloria" of the group so I don't hear it? There you go, now I am making a new term, the Gloria of the group means the one who is so socially inept, they don't know someone is talking about them.

I love that some thing are indeed quite universal. I too, have a softer two tone whistle I use with my son, west. If it doesn't work, you better cover your ears, you might have them blown out. I can whistle so as to be loud enough to get the attention of 240+ teenagers, all of whom are stretched across a football field. Still use that whistle at work and church. When the nice mannered person has asked for attention and people keep talking, I whistle.

Hi rob, there is no way in the world that I would think of you as
"socially inept", you are one of the most diplomatic people here on GP, and you still get your point across.
Re the "Gloria" concept, whenever you think someone is talking behind your back, I have only three things to say, consider the source x3. They have their own agenda.
I enjoy your posts.

Oh I was totally kidding west. Oops. I wasn't even in a bad mood (I have been spending time watching my boss' parents' Shoah foundation videos, so maybe that affected it).

:)

meldy, I did think of one! My younger sister are and have always been really close. We developed our own language via eyes. It'd make our grandmother furious when we'd look at each other. She knew what we were up to. It was good we knew each other, but not so good she knew us well enough to know! That's kinda like twins, but really, we're far apart in age.