No. Cats don't play after the kitten stage; hissing means they really don't like each other much.
it looks very weird and hisses
Actually it's not good to wrestle and wrestling is more dangerous than it looks.
No, female cats do not have testicles. Testicles are male reproductive organs that produce sperm, while female cats have ovaries which produce eggs.
a wooly bear curls up and its fur hardens witch starts the progress of rotting and hairs sometimes fall off
Sometimes. Most men who complement a woman are truly atrracted to them, but some really just think the female looks beautiful at the moment and they decide to voice their opinion of how the woman looks.
In looks or behaviour outside of breeding season, no. During breeding season the female may get a bit fatter with eggs, and the male will get breeding stars on it's gill plates and sometimes along the pectoral fins.
It probably means that he has an interest in you or he wants to be friends with you.
if it looks fatter
No he is a male this is what he looks like!!!!
Sometimes
Maybe they think you cute, or maybe they want to meet and talk to you.
No, she sounds like a female, looks like a female as well.