strange word

[Blanko]

Hello!
教務準備室であんな事やそんな事、ゆっくりたっぷりさしつさされつ
I was wondering, what does さしつさされつ mean in this sentence... I somehow understand it overall, but can't really grasp the meaning of
さしつさされつ...

I'd be really grateful if someone could help!
Thank you!

[Mukade]

さしつさされつ is an expression that means "to exchange sake cups."

So, in combination with ゆっくり and たっぷり, this would roughly mean:

"(They) slowly exchanged sake cups filled to the brim."