Boozer to call jerk this? (7)
I believe the answer is:
barbell
'jerk this?' is the definition.
(jerk can mean to lift a weight, eg a barbell)
'boozer to call' is the wordplay.
'boozer' becomes 'bar'.
'to call' becomes 'bell' (I've seen this before).
'bar'+'bell'='BARBELL'
(Other definitions for barbell that I've seen before include "Weight lifter's equipment" , "Metal rod used in weighlifting" , "One may be seen in a gym" , "Weightlifting apparatus" , "One gets extremely loaded" .)