It's a portmanteau of queer and bender I believe.
Dozer - the biggest example of quendritude on the entire internet - has been trying to bring it into common parlance but has, to date, met with little success in this endeavour.
( Monty Boyce, My cheese game is strong, Fri 24 Jun 2011, 17:29, 4 replies, latest was 15 years ago)

Quendritude
With the addition of "quandry" you can imply gender confusion.
( Hdjejjwsjdjjf LOOK, Fri 24 Jun 2011, 17:34, Reply)

Incidentally
I don't think I've heard your opinion on him - thumbs up or down?

(I'm asking you in your new position as taste arbiter, you understand)
( Hdjejjwsjdjjf LOOK, Fri 24 Jun 2011, 17:36, Reply)

I'm rather keen.
His late 60s albums with his band Taste are superb - especially On The Boards and the live one at the Isle of Wight. A good guitarist.
( Monty Boyce, My cheese game is strong, Fri 24 Jun 2011, 17:39, Reply)

The first one I heard
Was Irish tour '74 - the version of tattoo'd lady on there is one of my all time favourite bits of music.
( Hdjejjwsjdjjf LOOK, Fri 24 Jun 2011, 17:52, Reply)

Vipros used it once.
SO THERE.
(dozers, do fuck off ur a nob m8, Fri 24 Jun 2011, 17:37, Reply)

I've just remembered
I was in Newquay when I saw a band called the smug jars, and instantly thought of him.
( Hdjejjwsjdjjf LOOK, Fri 24 Jun 2011, 17:38, Reply)

Have you woke up yet Monty since imbibing the alcohol?

( girlinthehole, Fri 24 Jun 2011, 17:37, Reply)

A touch.
It's either the two beers or the six packs of hulas, but something's sorted me out a little.
( Monty Boyce, My cheese game is strong, Fri 24 Jun 2011, 17:40, Reply)