2.)(n) To be in Battle mode can also refer to putting on one's socks
(going into battle mode!)
2.) Hey, you in Battle Mode yet, we have to go in five minutes!
Done, generally, to someone in your social group over and over again until they find out it's you.
You stop when they start to get annoyed and then do it once a month or so, so the joke does not die.
Person 2: We'll have to put it in Battle Mode
*Person 1 and 2 put XXXs car's windscreen wipers up*