Perhaps straw one is easily taken in (6)
I believe the answer is:
sucker
This clue is a double definition.
'perhaps straw' is the first definition.
(a straw is used to suck a drink)
'one is easily taken in' is the second definition.
(somebody easily deceived or taken in)
(Other definitions for sucker that I've seen before include "I was taken" , "Shoot growing from roots or person easily deceived" , "Gull" , "Slangily, one who is easily deceived" , "Mug - one using a straw?" .)