Microsoft time 

A length of time that changes randomly like the time remaining counter on a computer running windows when you are downloading a file or migrating data. Referring to the tendency of that counter to read something like "time remaining: 27 minutes" then "time remaining: 29 minutes" then "time remaining: 28 minutes" then "time remaining: 15 minutes" then "time remaining: 31 minutes."

"When will you be done with that game?"

"Ten minutes."

"Is that in real time or Microsoft time?"

Microsoft time by KimJSCP March 17, 2010