How do I get moldy milk out of a cup?

For some this is a preference, for others it is not. Calling a preference "correct" or not is taking it too far -- ask people before making an assumption about...

That's "warming the pot." It sort of activates the tea leaves (they'll warm a bit when placed in the warmed pot), plus helps the teapot hold heat a bit longer.

It will cool slower, as the metal in the cup will conduct the heat and keep it warmer longer.

Yes, but make sure the milk does not tip or spill out and no water gets in.

Check the backing of the carpet. If the backing of the carpet is covered with a wide splotch of mold, you may need to replace the carpet. If you're unsure,...

You probably can't. You're still going through puberty, and your body will get curvier as this progresses. Try to love your body as it is in the meantime. We all...

Yes, it does.

No. Powdered milk is dry, and milk is wet. If you add milk to it, it will get soggier.

Yes, of course. It has the same ratio, which is all that matters. You can double, half, triple, etc. any recipe, and will just end up with more or less...

You could, but be extra careful when boiling it, or else it could sour. Fight milk is very feisty.