Oh blech!
"sluggers"? ?
What nasty connotations this has - and could be construed to be somewhat derogatory to the boys out there!
I am astonished to see that this word is attributed to my neck of the woods (West Oz). I've always lived here and have never heard it - well, apart from it being the name of a baseball-themed restaurant down the road. Like Hev says - we have other names for this little item of swimming attire, which are usually just called "speedos", but "sluggers"? No thanks!