Not really a pot phrase but the way some people use the word "literally". For instance, "My head literally exploded"! It did? How did you re-assemble it?, or the football field is literally 100 yards long! Really? How about "impact" or "impactful"? Seems like all of a sudden everyone is trying to use it in a sentence, especially newspeople. "How the weather will "impact your weekend", the interstate wreck will impact your drivetime, etc,etc, ad nauseum. Or "this plant is very, very, unique!" Something is either unique or it isn't, there is no middle ground.