Caitlin from Dallas, Texas, says that her family always referred to jiggly underarm skin as flying Bettys. They’re also known as bat wings, bingo wings, Hi Bettys, and Hello Helens. In German, they’re Winkerarme, or “waving arms.” In Brazil, they’re...
There comes a time in life where waving hello means showing off some flabby underarm, but we have some slang to make “flabby underarm” sound a little less icky. A hi Betty takes its name from the idea of someone waving hi to a friend named Betty...

