Interesting you say that about Ace : at the time of first broadcast, there was definitely a feeling that Ace was trying FAR too hard for cool, in that slightly lame manner of a 'cool kid' whose dialogue was all written by 40 year olds - and was generally quite embarrassing. (Not Bonnie Langford levels of embarrassing, but still)

But this is probably the kind of thing that improves as time goes by and the audience no longer notices she is using slang that is 3 years out of date and wearing clothes that are too young for her. :-D