I have a friend, once at ....?

應該不是諺語

according to urban dictionary,
band camp :
(1) A strange mixture of hell and the best time of your life.
釋義: 我朋友昔日置身人間地獄(the worst time)與置身極樂之地(the best time )


(2) Where band geeks go to socialize, practice their instruments, practice their drill, have severe dehydration, and generally improve their marching band.

釋義: 我朋友昔日是在樂團營地的

http://www.urbandictionary.com/define.php?term=band+camp

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