Pour tea drink over flyer (2,6)
I believe the answer is:
be mother
'pour tea' is the definition.
(to 'be mother' can informally mean to pour the tea)
'drink over flyer' is the wordplay.
'drink' becomes 'beer' (beer is a kind of drink).
'over' is an insertion indicator.
'flyer' becomes 'moth' (something which flies).
'beer' going around 'moth' is 'BE MOTHER'.
(Other definitions for be mother that I've seen before include "...take role of 8 [THE OTHER]" , "Generator when the clock strikes 3?" , "Pour" .)