I flirted giddily with Penny, getting day out of school? (5,4)
I believe the answer is:
field trip
'of school?' is the definition.
The definition suggests a singular noun which matches the answer.
'i flirted giddily with penny getting day' is the wordplay.
I cannot really understand how this works, but
'i' is within the answer.
an anagram of 'flirted' is 'feldtri' which is present in the remaining letters.
'penny' could be 'p' (short for pence) and 'p' is found in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'out' is the link.
Can you help me to learn more?
(Other definitions for field trip that I've seen before include "Expedition by students or scientists" , "Expedition to study" , "scientific expedition" .)