Like all lazy terms it means whatever people want it to mean. Ask them to explain though and they struggle and reveal only their sourness and lack of ambition.
I have nice things and live in a nice place and am not going to apologise for that. Life could be even nicer if I had made different choices, worked harder or the chips had fallen differently. I worry about my pension and switch from despair and rage at this government but on the whole I am content and try not to think about the bad things I can do little or nothing about.
I want other people to have the opportunity to have the things I have and even more - my political views don't prohibit or punish people for amassing wealth. All I ask is that they contribute to society by paying fair taxes to assist others and obeying laws like the rest of us are expected to.
In a way it's selfish of me. The more people who build comfortable and happy lives by having the benefits of free education, health care, minimum wage, subsidised housing, legal aid etc the more comfortable and safe my own life will be.
There will be people to deliver my children, vaccinate them, teach them, operate on me when I am seriously ill, wipe my bum when I'm old, drive buses, clean the streets, keep law and order, put out fires in my burning house, defend me if I should ever fall foul of the law by having a naughty work gathering in my back garden during lockdown. You get the the picture: I consider that I get more out of it than if I had to pay for all those things by myself.
The other thing I get out of it is Society. On the whole if you give people the chance of a reasonably comfortable life they will live quietly and peaceably. They may also go on to achieve wonders that would be wasted if their parents couldn't afford to send them to Eton or even a kitchen table where when the food was cleared away they could study.
I am realistic and realise that despite all these benefits some people will waste them or transgress in worse ways. Mostly the people who do that are stupid, poor and antisocial but you don't have to be poor to be antisocial as we are increasingly seeing. The jury is out on stupid. Anyway, I accept that bargain because I am rational and generous of heart and all else is dealt with because I pay taxes to support the police, courts and prisons.
Before we had "champagne socialists" after Labour's 1997 landslide we had the "politics of envy" put about by Margaret Thatcher's government and which still lingers. That was to explain why some people were "haves" and most were "have nots".
I don't envy anyone but I see plenty of it in political opponents and no remedies except for "work harder".
I don't subscribe to the view that all Tories are bastards. My nature is more charitable than that. But some people don't half make it hard for me to continue thinking good thoughts.