fall off, tumble down

a seat (piece of furniture) / (by extension) a post, position (in an office)

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

chair

armchair

an electric chair

(exercise) wall squat / A group activity where a ring of people attempt to maintain the position of "sitting" on the lap of the person behind them.

folding chair