### Clue: Gobsmacked when fiddling friend's tax (10)
### Answer: TRANSFIXED 
 ### Explanation: Definition: Gobsmacked
  Anagram(*fiddling*) of *FRIEND'S TAX*.
Defn:  Adjective describing someone so astonished he/she's rooted to the spot,motionless, perhaps after he/she has clapped,smacked his/her hand over his/her mouth,gob in surprise.