The term “y-fronts” never caught on the US because American underwear maker Jockey convinced the buying public to use the term “Jockeys” instead. I'm pretty su

The term “y-fronts” never caught on the US because American underwear maker Jockey convinced the buying public to use the term “Jockeys” instead. I'm pretty sure I have seen "y-fronts" in US shops and in the movies. The post specifically mentions that people call them jockey briefs in the US.