English
girther
From girth + -er, as a pun on birther.
Formed from girth + -er
Proto-Indo-European *gʰerdʰ- ‘to encircle, enclose’
Proto-Germanic *gerdō ‘girdle’
Old Norse gjǫrð ‘belt, girdle, saddle girth’
Middle English girth
English girth
Today it means
noun One who believed that Donald Trump was shorter and heavier than suggested by his presidential physical examination in 2018.
Language periods are conventional ranges, not dates for this word.
Etymograph / girther