Without more context, I would not know what it means.
I myself have done some search for this phrase on the Internet and come up with a different conclusion.
At a wedding ceremony, the presiding or officiating person will say, "Now kiss the bride!" to signify that the groom and bride are now officially married.
Once can use, "Kiss the pooch!" instead of "Kiss the bride" toward the end of dogs' wedding.
Student or Learner