Now, a snob is someone who acts superior or who feels they have better taste than someone else.

现在，势利小人是指表现出众或觉得自己比其他人更有品位的人。

The expression " to get off your high horse" means to stop acting superior, to stop thinking that you are better than other people.

“to get off your high horse” 这句话的意思是停止假装高人一等，停止认为自己比别人强。