Re: Ah, office chairs
And the gas strut lift. Soooooo inviting to flick that little lever whilst occupant of said chair was engaged in a very earnest telephone conversation.
I would sneak up on said victim, then with my shoe flick said lever from behind...
For a while some Bastard would, after I've left for the day, sit in my chair and lower it, then leave it like that for me to discover....