A shorter version yet more better version of "love you". It combines all the good words together such as cuteness, happiness, puppies, bunnies, NAUGHTINESS, cheekiness,I-love-you-ness and everything lovely.
It can be used in a non gay (or non-hetro way if you're gay) to friends, family and any loved ones. AND AND AND it can be used in the most sexual way imaginable. It's a versatile word that has so many deep and meaningful meanings.
I Duku you or Duk you
Duku good night
Duku my good chum, let's meet up again soon.