as an Engagement test, you are stripped naked, put on bench and caned

before she would agree to marry you, you had to agree to accept her discipline, however she chose to administer it.
You agreed.
She demanded a test:
For the next 30 days, You would come to her place at 6 pm, go to the library, strip naked, and get on the bench.
She would apply cane strokes to your bottom, number of strokes determined by a random number generator, with a minimum of 15 and a maximum of 60. 
You felt lucky that '60' only popped up on the final day of the test.