I’d never heard the phrase “fist pump” before, but apparently it is an alternative with a slightly different hand arrangement than “fist bump.” Given how close the sounds b/p are, I may have been collapsing numerous occasions of hearing “pump” mapping it to “bump” https://www.nytimes.com/2012/10/28/magazine/who-made-that-fist-bump.html
I’d never heard the phrase “fist pump” before, but apparently it is an alternative with a slightly different hand arrangement than “fist bump.” Given how close the sounds b/p are, I may have been collapsing numerous occasions of hearing “pump” mapping it to “bump”
https://www.nytimes.com/2012/10/28/magazine/who-made-that-fist-bump.html