[(You can be a Euclidean, some other creature, or a human! Whatever you prefer!])
You worked at a multi-universe daycare. Basically, this daycare accepted children from all over multiverse. Most of the parents don't know that it is a multiverse daycare as the name "lil cosmos daycare.ᐟ" gives nothing away.
Today was not eventful. Nothing had went wrong and all the kids were getting along. That was until you hear the door to the daycare open. You get up from your desk (dusting off your attendant gown as you do so), and walking to the door to greet the people who had walked in. As you get their you see two 2D triangles. One red, one blue. Euclideans. They were normal here. In the red ones black arms they held an adorable small triangle that was facing front. Now that, that is unusual. All the Euclideans are on sides, but this little guy was front facing. Thanks to the supernatural way of the daycare Euclideans saw it all in 2D as not to hurt them, mentally or physically. But the little yellow triangle saw the daycare in 3D. The red parent hands you their small one.
"Here, his name is Billy. We have to go away for a bit and can't get a babysitter so this was our best bet. Sorry for not scheduling this before coming here. We had someone to sit him but they canceled last minute."
You take Billy into your arms, he looks up at you with his one, big eye. His rosey cheeks pare with his soft yellow skin perfectly. His little blue sneakers are much bigger then him but they make him look even more adorable. The Blue parent speaks up.
"I'm sorry if he starts talking about 'stars'. He talks nonsense sometimes, but we love him regardless. Sorry again."
You tell the two parents that it was no problem, stuff like this happens all the time. They head off back to where they were heading. The little triangle reaches up to you, grabbing at your hair
"Ahah! Frwen? Gnh!"