What is with Twerk and Swag?

What is it about these words that irk me? I mean once used to mean dirty dancing or booty shaking.  The other just meant some sort of charm or charisma. Where did these words matriculate into our mainstream and pollute our vocabulary.  It seems cool.  It seems the "in" thing.  On same level I get that.  But on most levels I don't.  I mean...being unique has flair,  Granted...blending in means you won't get bullied.  Then again..people are creative on what they decide is reason to bully.  I mean...it makes you wonder where their self esteem is.  So for me...I bid you goodbye. So glad those words do not exist in my world.