Confuse smack with alcohol? Drop of lager injected! (9)
I believe the answer is:
bamboozle
'confuse' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for bamboozle that I've seen before include "Lead by the nose" , "Puzzle" , "Gull" , "Fool" , "Mystify, cheat" .)