in-law chaser
n.— «Not surprisingly, there are times when it may snow in late April or early May—this in Navajo culture is called an “In-Law Chaser.” Navajo teaching says if an in-law has a weak mind, that individual will state he or she can’t work outside because it’s snowing. Moreover, an in-law may also be afraid to travel when it snows this time of the year. It is therefore, a form of teasing in-laws yet a way of building character.» —“A Season of New Beginning” Discover Navajo Mar. 28, 2007. (source: Double-Tongued Dictionary)