Loser and lame
“You’re a loser!” “Don’t talk to that guy, he’s a loser.” “Dude, that’s totally lame.” To me, these phrases don’t seem unordinary, but to other parts of the country, they may have different ways of calling others losers and lame. It’s probably just another one of those minor cultural differences between states.
But yeah, there are still Americans who use these hurtful terms on others. However, when used in everyday speech, people don’t really use their literal meaning. People don’t use these words nearly as often as other choice words for putting others down. Other terms you will often hear in songs or in movies.