A reflection doesn't look back, it's inanimate. Most riddles are bullshit, although it ruins the fun for those who think they are sooo clever, most of the time, there is more than one answer.
true refection can only be seen in water and if the water isnt still recognition of ones self reflect on that ! advice dont think to hard simplicity is wisdom ! isn't cleaver like the ego and no ego likes a simple smart *** do thy know