Add drink at college (3,2)

I believe the answer is:

tot up

'add' is the definition.
('tot up' can be a synonym of 'add')

'drink at college' is the wordplay.
'drink' becomes 'tot' (I've seen this before).
'at college' becomes 'up'.
'tot'+'up'='TOT UP'

(Other definitions for tot up that I've seen before include "Do summer job" , "Tally" , "Add (some numbers)" , "Count" , "Reckon" .)

I've seen this clue in The Independent.

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