I'm taking the attitude it's a fraud (9)
I believe the answer is:
Here is my best explanation:
'a fraud' is the definition.
(I've seen this before)
'i'm taking the attitude' is the wordplay.
'taking' says to put letters next to each other.
'the attitude' becomes 'posture' (posture is a kind of attitude).
'it's' acts as a link.