Taking the Best as a point of reference
We are all familiar with and fans of it, but the famous remark from this well-known movie is not really one that would be exchanged between two individuals who are in a romantic relationship. To get things started, the joke needs to be grasped by every single member of the audience. To begin, it is always preferable to think of something completely new to come up with rather than merely replicating what someone else has already thought of. This is because it shows originality.
It appears that this priest was a member of the family, and calling attention to yourself by purposefully butchering the pronunciation of a term that you are fully capable of pronouncing correctly would do just that. Unless someone makes an explicit request for it, you should leave this one for the reception.