Now there was a time when Federer might have acknowledged the crowd with a fist pump and a smile and moved on to the next point.
Not a crime, by any means, but why, I shake my fist at the sky, why did they have to go there?
Bored, Bieber started a game, playfully jabbing everyone in the crotch with his fist.
Old English fyst, from West Germanic *fustiz (cf. Old Saxon and Old High German fust, Old Frisian fest, Middle Dutch vuust, Dutch vuist, German Faust), from Proto-Germanic *fukhstiz, probably ultimately from PIE *penkwe- "five" (cf. Old Church Slavonic pesti, Russian piasti "fist").