Though I have a functional IQ of at least 6, I refused to join Mensa. They seem to be a rather humorless, or, if in GB, humourless, and a stuck-up lot at that.
Well, their attitude might be "If you can't keep up". A certain arrogance and
lack of ability to suffer fools seems quite common from professionals in some
quarters.
Anyway, I would agree in that anyone that feels such a pressing need to tell
the world how clever they are might be suspect
...