Get the wrong idea, Mrs! (7)
I believe the answer is:
misread
'get' is the definition.
The definition and answer can be both related to thinking as well as being verbs in their base form.
Perhaps they are linked in a way I don't understand?
'wrong idea mrs' is the wordplay.
'wrong' indicates anagramming the letters.
'idea'+'mrs'='ideamrs'
'ideamrs' anagrammed gives 'MISREAD'.
'the' acts as a link.
Can you help me to learn more?
(Other definitions for misread that I've seen before include "Take the wrong way" , "wrongly interpreted" .)