Only in Genealogy

Terry of Hill Country of Monroe County, Mississippi, gives us this little ditty to kick off the renewal of the Only in Genealogy blog:

Where else but in genealogy would two adults exchange email after email to determine the connotation of the phrase "petered out" in terms of a bloodline ceasing to exist due to the lack of males produced?

So might this exchange have been futile? Or a sign of how precise genealogists try to be? You decide, and keep the funnies coming! Thanks, Terry!