In reply to Aaron Jorbin.

Did you look at the ticket in Trac? There is a long discussion about how the message insults some people. Let me help you with this one. Here is an excerpt from the ticket:

[Cheating] is regarded as dishonest. Calling someone a cheat is hurtful if the accusation is not true.

I develop with WordPress on my local machine. When I'm working on a WordPress problem I leave all my server and browser sessions open for hours at a time (and overnight), so that I can pick up where I left off.

Once a day, I get the message "Cheating, are we?" (in en-GB; in en-US it's "Cheatin' uh?"), as WordPress automatically logs me out.

It never ceases to annoy me to be unjustly accused of something I am not doing.

The discussion is at https://core.trac.wordpress.org/ticket/38332

The evidence is against you. 'Look before you leap' comes to mind. Are you one of those who finds the message offensive? It seems you might be.