One can use a johae to express gratitude, exquisite joy, deep and meaningful feelings (although if these are lusty feelings, one must be careful since an attempt at a johae can easily transform into a sleazy wink if not careful). Only the luckiest of lucky have had johaes showered upon them.
"Oh yes, is this true?" (JOHAE)
"Wow... never have I been so lucky to receive such a glorious johae. That is even more rewarding than all of my long, tedious struggles."