Yeah, I almost acknowledged that myself in the original post. But most people don't know what British Thermal Units are, either. And you can't call them "Bitcoin Cents" because that would also be "BTC".
I'm guessing your utilities are included in your rent. Anyone who owns a home or rents an apartment with its own meter is familiar with BTU from their gas/electricity bill.
http://www.aga.org/KC/ABOUTNATURALGAS/ADDITIONAL/Pages/Howto... - looks like it depends on whether they choose to measure volume or energy content.