In my PyCon talk on ApplePy I pronounced things like 0xD000 as "dee thousand". I felt a certain uneasiness at the time, but figured people would understand what I meant and it was quicker than saying "dee oh oh oh".
Finally someone called me on it:
Just heard @jtauber call 0xD000 "dee thousand" and I'm just like you can do that??????
— Joe Friedl (@joefriedl) August 30, 2013