Couldn't think of "croissants" as a kid, called them "curly rolls," my uncle mocked me as a true product of the south, etc...

When I was young there was a book of words made up by people where words didn't exist. Close to what OP was saying. They were called Snigglets. I remember a few.

1. Downpause-the interruption of rain when you drive under a bridge.

2. Ignosecond- the tiny interval of time, for instance, between closing the car door and while it is in motion, remembering the key is inside.

3. PRNDL - pronounced prendle, the stock in the middle of the car it on the steering column that switches between drive modes.

And one I made up:

4. Blurble - when a liquid is being poured into a container and at some point a drop jumps out of the container and into your eye or some other inconvenient place. Also, when you are drinking and the liquid level in the container reaches that critical point where when the drink is returned to a level position causes a drop to blurble out of the cup. And finally that sound a liquid makes when it comes out of a 2 liter bottle.

My mom sometimes uses "doomaflagidad" for basically anything. The only way I've been able to translate is by using context clues. Usually based on what we're talking about or if she's pointing or using hand gestures.

You people are way too bright with your apt and often witty alternatives for when you forget something's actual name. Me? I just employ an entirely random sound or made up word. It drives my wife insane. "Babe, would you pass me the...fucking... spraaaal?"

Or just substitute whatever comes to mind first.

When my mom forgets the word she wants to use, she replaces them with words like "whaticall" or "doflicky"

Shoobynorf

Definitely

I used to work in a Mexican restaurant. I always forgot the Spanish word for oven, so I'd say "La máquina que hace calor la comida."

Well I don't see why it can't be.

Certainly; but fuck if I can remember any of 'em. 🤷‍♂️