This is a round to play some "Charades":
Explaining concepts with mimes/ gestures only, as an interactive game: All the others watch and shout what comes into their mind, what the person who has to explain can then also react upon.
Intellectual associative fun when played with difficult / abstract concepts, too, so: No restricting ruleset.
Drop-in / Drop-out at anytime possible.
🧮
offered by: @dreieck