Every now and then, when you buy something that's behind a counter, you'll be asked if you want yang biasa or yang bagus: the regular kind or the good kind.
I learned my lesson the first time around, with clothespins: I bought the biasa kind, and most of them fell apart after about two loads of laundry, so I had to go back and buy the good ones.
I was a bit puzzled, though, to get this question in Surabaya while trying to buy, if you'll pardon the expression, laxatives. Does anyone buy the ordinary kind? Isn't this one case where you really want the best?
(It's a common problem, by the way, for those of us who didn't grow up ingesting large quantities of white rice; the stuff turns to cement in your guts.)