As verbs the difference between dacked and nacked
is that dacked is (dack) while nacked is (nack).
dacked
English
Verb
(head)
(dack) dack
English
Verb
(
en verb)
(Australia, informal) To pull down someone's trousers as a practical joke.
nacked
English
Verb
(head)
(nack)
nack
English
Verb
(
en verb)
(computing) To acknowledge negatively; to send a NAK signal to.