Sucker about to get taken in by flipping scoundrel (5)
I believe the answer is:
leech
'sucker' is the definition.
(I've seen this before)
'to get taken in by flipping scoundrel' is the wordplay.
'to get' indicates putting letters inside.
'taken in by' becomes 'c' (I can't justify this - if you can you should give a lot more credence to this answer).
'flipping' is a reversal indicator.
'scoundrel' becomes 'heel' (heel can mean a scoundrel or villain).
'heel' backwards is 'leeh'.
'c' going inside 'leeh' is 'LEECH'.
'about' acts as a link.
Can you help me to learn more?
(Other definitions for leech that I've seen before include "One used to bleed" , "Clinging type" , "Old medicinal sucker" , "Blood-sucking worm or parasitic person" , "Parasite - hanger-on" .)