I think it is a sign of your musicality. I'm always singing snatches of songs and whistle a lot. My son does too without realising he's doing it, like me. Just don't do it when your following a girl or else she might think you are cat calling.
If he flirts with you a little more than usual, talks to you a little more than usual, hugs you or shows a little more affection than usual etc., there are many things that could mean he likes you.
Being able to whistle doesn't mean your a happier person than others. Often people whistle when they are happy though but people who can whistle will still have bad days.
no
From my experience, she's very scared.
It means someone farted 3 times more than is usual.
Um.. Noo if your working out yes if not it could mean something good or bad
Lets use an example from Thor. Jane: Is this what you normally look like? Thor: More or less. So in the example somedays he wears it alot, and somedays he barely or wears it LESS than he usually does. In scientific terms it is the subject doing more than usual or less than usual
He likes you.
Neither
the five tigers have been eating more than usual
It could mean a lot of things. It might be as serious as diabetes or as simple as being excited. If it lasts more than a day, give your vet a call and ask if he's concerned.
Whenever a ferrets acts different from their usual self, it could be an illness. But as they get older, they do tend to sleep more. You might want to have an veterinarian check your ferret, as they do hide their illness.