@Szescstopni @felurx to be picky, if you say "one" in any of the ways I've heard it pronounced by English natives, few Spanish speakers will hear "Juan". (As it uses the characteristic strong J sound in Spanish.)

Although I know at least one Spanish joke that hinges on the similarity of esp. the rest of the sounds in "one" and "Juan".

(My guess is that some Chinese word would work?)