I thought it was an acceptable synonym for sick. Poorly means not quite right, but sick means tummy upset and feeling nauseous to me. Ill is worse than poorly, flu rather than a cold.
And tummy is a word that I've always heard, it actually feels weird saying stomach.
Epic comes from being a gamer, before it became more widely used. Failure of epic proportions, like getting an entire group of people killed when fighting a big boss has always been the true meaning of Epic Fail!
I also thought tipsy was another good descriptor for that stage between being drunk and being sober. I generally prefer not to get drunk, to just maintain that slightly relaxed, tipsy feeling.
I have a Scottish family, so I do wonder how much is colloquial, as there are other words I use that I only hear from other Scottish folks.
I do find some things irksome though, mostly mis-saying common words or poor structure of sentences though.
And honey and sweetie have long been terms of endearment, and my particularly special word for someone is sweetpea, like the flower.