I remember my mum having a Tupperware party in the early seventies. She had all her friends round for a social gathering and to buy plastic containers. It sounds bizarre now.
Oh, yeah that sounds bizarre... I've heard of tupperware parties but I always assumed that it was like a picnic where you brought your own food (in tupperware (or similar) containers) and shared with others.
The host was trained for that before hosting. It was basically a pyramid scheme.
Being presented with an invitation was very rude. And you didn’t know what to do with it.
Tupperware parties were predatory behavior, and you’d host them and pretend everything is alright because you wanted to give the hot potato to someone else.