FSR
FSR definition by Slang.net - The Slang Dictionary
This page explains what the acronym "FSR" means. The definition, example, and related terms listed above have been manually compiled and written by the Slang.net team.
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For some reason, some people use FSR to mean "for some reason." This acronym typically precedes a mysterious or unexplainable fact.
For example, if your wife cannot figure out why her car keeps beeping at her, she may send you a text that reads "FSR, the car won't stop beeping." (In this case, it's likely the SR is that your wife's car is still on, and she has walked away with the keys.)