Back home the abreviation - ABC means a type of ice based dessert, quite similar to this post by Jakarta DP. While over here ABC (ábécé) refers to supermarts. Is it the same in Bp, Zsolt?
History of supermarts is considered new in our town, as only 39 years ago the first such biz. was set-up. Needless to say, it was THE place to shop. These days, like anywhere else in the world, people here prefer to shop at nearby hyper-mart (Tesco). So, the ABCs are more of a back-up for emergencies purchases or for perishable.
In your country, is there another meaning to "ABC" ?