What does going Sicko Mode mean?

You know what a “sicko” is right? Someone who is sick, or crazy, or has certain extreme behavior or attitudes or obsessions that strike the observer as out-of-balance. As in imbalanced. Well,

“Sicko Mode” would imply that while one is capable of slipping into or clicking in that mode and being or acting like a sicko in that mode , one has other modes. Presumably non-sicko.

A mode in this sense is simply one specific way of operation or performance, where one has multiple such ways. A different mode clicks in by context or specific stimulus. Home mode. Work mode. Drunk mode. Bed mode (several, probably such as sleep mode or sex mode - which latter mode needn’t be bedridden but could be something else ridden). Hammock mode. Multiple modes may engage simultaneously.

These are not technical terms , please. Don’t look for any of this in the DSM-V. In particular, you may not really click in modes yourself . Just do things. But where you find certain kinds of context or stimulus call for a set attitude or a set array of responses and techniques, these form readily and naturally into a mode you engage for those times.