Probably retained sperm, it can last a few years.

That said I first thought going by the title this thread was to do with the myths of the fae and the fetch associated with them as traditionally the rhyme goes along the lines of:

Riddle me questions,
Riddle me rhymes,
Riddle me swiftly,
I've said it three times.
By threes and by custom you dare not deny.
I bind you to answer and compel your reply.