Used as an explanation as to why you are requesting something when you don't want the people to know why. The more sinister your statement sounds in context, the better.
Originally found in an engrishadvertisement for Japanese sake, "for reasons" has come into common usage to ironically or sarcastically point out either obvious reasons for a thing, or a complete lack of explanation. It is also used to point out a nonsensical or untrue explanation, or to avoid giving an actual explanation.
You can buy water inside, but they won't let you bring in your own water, for reasons.
Yeah, they won't let you use your cell phone on an airplane, for reasons.
1. With simple reasoning and logic, Michael figured out the lateral thinking problem.
2. The atheist/disbeliever pissed off the priest (or rabbi, cleric, etc) by using logic and reasoning to question the Bible (torah, quran, etc).
