A person who upsets their girl/boyfriend and/or spoils their social gatherings by either obsessivly attempting to trackdown some cocaine/convince people at the gathering to 'chip in' for coke, constantly suggesting someone racks up once cocaine has been aquired or by going on about coke right after snorting the last line (especially when there is no way of getting anymore. The fiend will often stoop to 'ringing round for numbers' often ringing people they know at unreasonalble hours.)
A coke fiend might also choose doing coke over spending time with their loved ones, looking after loved ones in times of need or missing prior commitments like work or appointments.
A coke fiend will usually spend all his/her money on cocaine when they get the chance and they will probably spend money on poor quality or imitation drugs rather than quit while they are ahead.
They will usualy be well into the early stages of adiction and crave it regularly even if they don't act on it.
*At a house party
where everyone is already having a good time*
Coke Fiend "Any of you guys wanna chip in for some coke
Friend 1 "I'm okay for coke
dude. I've got beer
and a bottle of tequila! You want a shot?"
Coke Fiend "No sweat bro, yeah I'll have a shot hit me up"
*Everyone is laughing and having fun doing shots and dancing*
Coke Fiend "So dude do wanna chip in for some coke
Friend 2 "I don't have much cash bro so I don't know, maybe another night for sure, plus it's too late to get any good shit
Coke Fiend "Well how much do you have dude? I can ask Marko and Lisa if they can chip in and we can get a few bones
, what do you say?"
*Starts to get awkward and kill the party vibe*
... and so on and so on.