I'm currently writing something set loosely in the 1970s. One character refers to another (who is not present) in a disparaging way. The insulting phrase includes the detail that this person only wears skinny jeans, because the reader is meant to notice that a character introduced later is "skinny jeans guy". However, I've created a problem for myself in including this detail.
After some research, I have indeed confirmed that skinny jeans existed long before the 1970s, and were very much out of fashion at the time, so the spirit of the insult would make sense in-universe. However, through this research, I also learned that they didn't start being called "skinny jeans" specifically until 2005. Almost every source I read on the matter was happy to point this out, but is entirely silent on exactly what they were called in 1970.
Would anyone happen to know this small factoid? I looked for a more specific place to ask this (such as a 1970's fashion knowledge hub) but if there was a better place to look, I must have missed it.