Guy last to enlist in service (3,3)
I believe the answer is:
tea set
'service' is the definition.
(service can mean items for serving tea)
'guy last to enlist' is the wordplay.
'guy' becomes 'tease' (guy can mean to tease or make fun of).
'last to' suggests the final letters.
The last letter of 'enlist' is 't'.
'tease'+'t'='TEA-SET'
'in' is the link.
(Other definitions for tea set that I've seen before include "China for small meal" , "Cups, saucers, plates" , "facility for refreshment" , "tableware" , "Equipment for an afternoon meal" .)