Learn English – Word for someone who studied with me at a graduate school

The word you may be looking for is snob.

Someone who is a snob, thinks they are better than others (whether or not they actually are) and can be based on class divisions.

Ever since he bought that fancy new car, he's been a snob about his friends' old cars.

There are intellectual snobs, social snobs, economic snobs, the list goes on...

Another possible word is elitist.

His elitist views of an upper class leaves no room for social mobility.

but tends to be more class related.

A phrase which gets used to separate those who worship profits at any cost is

capitalist pig

and refers to persons who look to enrich themselves at the expense of the (relatively) less advantaged, they usually have a disdain (or no time) for those with less money than themselves. Think The Great Gatsby or The Wolf of Wall Street. Capitalists, especially Darwinian Capitalists, will tend to believe that their success is due to superiority in ability and those with less are of a lesser ability. This should not be confused with the Calvinist belief that earthly success is a sign of God's grace.

I think the word you are looking for is "humping", which is often used to describe simulated sexual activity in the way you describe. It can also be used to describe actual sexual intercourse depending on the context and usage.

It certainly is behaviour that is demeaning to a woman or a person who it is done to. There's an infamous video hoax that apppears to show former Italian Prime Minister Silvio Berlusconi doing this behind a woman on the street as he enters a building.

The other sense in which humping is used is when a dog decides to "hump" your leg. It may be trying to have intercourse with your leg, but you would probably want to say:

"Stop humping my leg"

And then gently shove him off your leg!