Crossword Genius

Beer delivery outside a stag do activity? (9)

Ross

I believe the answer is:

paintball

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'stag do activity?' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'beer delivery outside a' is the wordplay.
'beer' becomes 'pint'.
'delivery' becomes 'ball' (ball is a kind of delivery).
'outside' is an insertion indicator.
'pint'+'ball'='pintball'
'pintball' going around 'a' is 'PAINTBALL'.

Can you help me to learn more?

(Other definitions for paintball that I've seen before include "Missile used in war games" , "war game" , "simulated combat" , "messy game" .)

I've seen this clue in The Times.
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