Yeah... you should have put an age related divider here.
Guaranteed you may not remember some of the sitcoms I watched depending on the country they were released.
Onedin Line (A British sitcom portraying the stories about Merchant trading during the Western times when Slaves / stocks were transported from Africa to USA and Britain while under the guise of product).
What is even funnier is the fact that anyone remembering the old advertisement of "Old Spice" and the cologne that Europeans used in those days was eminated from that show.
The USA WWI / WWII that used that cologne and then followed the Brill Cream (sorry spelling maybe off) in the 60s + etc... then Hair wax evolved.
Yup... History that is not recorded and yet seen on Sitcoms.