Most stupid old boy facing ordeal, getting you and me involved (8)

I believe the answer is:

obtusest

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'most stupid' is the definition.
(the most obtuse or stupid)

'old boy facing ordeal getting you and me involved' is the wordplay.
'old boy' becomes 'OB' (abbreviation for a private school 'old boy').
'facing' means one lot of letters go next to another.
'ordeal getting' becomes 'test' (I can't explain this - if you can you should believe this answer much more).
'you and me' becomes 'us' (the two of us).
'involved' is an insertion indicator.
'test' going around 'us' is 'tusest'.
'ob'+'tusest'='OBTUSEST'

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I've seen this clue in The Times.

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