Is there a hidden "mini-decade" between the 80s and 90s?

[muon2]

The late 80s/early 90s had an atrocious pop culture. Super sappy shows like Full House. Enormous hair full of hairspray and mousse. Acid washed jeans.
As for music:
https://www.youtube.com/watch?v=x1W6-ErrHls
https://www.youtube.com/watch?v=Z4gsveUHgw8
https://www.youtube.com/watch?v=149jGeIlx3I
https://www.youtube.com/watch?v=tbIEwIwYz-c
Most of things we think of today as stereotypical 80s are really from this period.

It's interesting since I think of the 80's in terms of the first half of the decade. The double dip international recession, Reaganism and Thatcherism, the Beirut bombing and Grenada invasion were the big international drivers. Culturally it was the birth of the PC, Mac and music videos, with the New Wave as the dominant music sound, and Star Wars sequels and Indiana Jones redefining blockbuster movies and their spinoffs.