I'll get to the joke in a moment.
I love when something from the past, like those shot glasses, are used in a new usefull way, rather than going out and buying something that does the same thing.
My mother used to have to make a large number of hamburger patties at one time.
She'd use to pieces of wax paper, a a big can of cling peach to do that.
Place ball of meat on wax paper, cover with another pieces, stomp the can of peaches on them to make round patties.
My mother also went to the beauty palor (Emma's Beauty Salon) twice a week.
Saturdays for the wash and set, perm, whatever needed to be done. Wednesdays she went in for a "comb out"
She worked with my father at the business. If anyone came in asking for her, he'd say
"She's at the beauty parlor getting an estimate"
Now come on, that's pretty good.