Per 
first documented instance of scp-xxxx’s weekly phenomenon:
Interviewer: Dr H█████ Atlis
Interviewee: scp-xxxx
[BEGIN LOG]
Scp-xxxx: Uhh hello? Can any of you fancy chaps hear me? I know you, you right there can with your nicely pressed suit.
Dr Atlis: (through intercom) if you wouldn't mind me asking, how are you able to communicate with us? Only being a skull and all.
Scp-xxxx: oh not to worry, that has no bearing on the situation at hand, i would like to speak to the headman of this fine establishment
Dr Atlis: that would be me, yes (steps away from the mic) i want that full cell scanned and i want any possible reason its able to speak found
Scp-xxxx: i can assure you sir, my comprehension of the queen's english is not strange, but we should really get to business Mr………?
Dr Atlis: Doctor, Doctor Atlis, and what business are you referring to?
:
Scp-xxxx: Finally! A man with qualifications, and the business I'm referring to is that of bones, now you wouldn't happen to have any on hand, would you lad?
Dr Atlis: You want bones? Do you mean human, or will any animal do?
Scp-xxxx: Oh any will do Mr Doctor , i'm not known for being picky.
Dr Atlis: well, unfortunately i cannot grant your request at this time scp-xxxx, as more research is required to determine whether you’re a threat or not.
Scp-xxxx: Hehe but… uh Mr Doctor, you don't seem to fully understand the situation i see. But.. I must realize that this is our first meeting, and I'm sure you don't want to leave a bad impression, I'll let it slide just this time.
Dr Atlis: Oh well thanks i guess, would you mind answering a few questions for us?
[END LOG]
Post interview report
The discovery of scp-xxxx’s sentience was a complete shock to everyone working on it, and being able to hold a conversation with it means it's intelligent of some sort, further testing required to determine exact intelligence. Scp-xxxx seems to have a strange interest with bones of any sort. I've made the decision that chicken bones will be provided to test scp-xxxx, if the phenomenon happens again. unfortunately, it seemed that scp-xxxx went back into a dormant state before it could answer any questions End Report
Signed: Dr H█████ Atlis
