Becky comes from Sir Mix-A-Lot’s Baby Got Back song
https://www.theroot.com/the-five-types-of-becky-1798543210
Becky: (noun); a white woman who uses her privilege as a weapon, a ladder or an excuse. Ex: “A random Becky hit me up on Twitter to explain why not all white women are racist.”
What started as a controversial term for fellatio has blossomed into an all-encompassing term for a specific class of white women. Not all white women are Beckys, but all Beckys are white women...
Becky is rarely used. Karen is most certainly and has always been a Hillary voter from day one. They don’t get this one. Because they can’t. They Karen’s are all Democrats.