The phrase "fucking reason" is a strong expression used to convey frustration or disbelief about something that doesn't make sense or has no understandable explanation.
Sentences with «fucking reason»
«Give me one good fucking reason to cheer the fuck up.» (bookbrowse.com)
Except for some fucking reason they felt a true freshman QB was the best runner. (sbnation.com)
Our 3 pt shooting has magically disappeared for some fucking reason. (sbnation.com)