a person who is very duck-like (i.e. is obsessed with yellow, enjoys hanging out at the park with grapes, very sarcastic)
Girl1: Wow, I really like your yellow shorts
Girl2: Thanks, I got them at a store
Girl1: Oh really? I would've though you got them out of your fish mouth.
Girl 2: YOU ARE SO DUMB!
Girl 1: ...
Girl 2: You're such a Duckalicious
Being Dimkalicious or being called it means that you are comparable to Dimitri Belikov, in the way that he is sexy, gorgeous, bad-ass, amazing, "like a god", fierce etc.