Bluetooth:
He couldn't determine if he was hearing things wrong or if the TARDIS was having problem translating it. Or maybe this creature was... ummm, insane?
Just a reminder, I don't think Bluetooth has any connection with a TARDIS just yet. Only ones with that are Axander and Tarys, and they haven't come clean about being Time Lords yet. (Almost a Time Lord in Axander's case.) So yeah, that's what everyone's hearing. :P Sounds like it's figured out English words, but not had enough time for syntax.
...Actually, when the Tenth Doctor woke up during the incident with the Sycorax, even people who'd never been in the Tardis started hearing English. Hm. Maybe it is working. Still, no one's told Bluetooth about it. Unless he came back with information from the future when he vanished! O_O