Words like "truckers" and "fuckers" might sound ok with a yank accent due to their hard r sound. As an Aussie, it just feels awkward to say and comes out sounding weak: "truckehhgehghss", which is probably why we don't say it. There's just no spot in my mouth to put my tongue where that word comes out strongly unless I put on a yank or Irish accent just for that word which then sounds stupid.