Gas pills!

At work the other day someone asked me to go next door to the pharmacy to get her something for gas. I said ok because she had done something for me earlier.so I went next door and started looking for it and I couldn't find it so the guy behind the counter says can we help you find something? I paused a few seconds because I really didn't want to tell them what I needed. But I had no idea where the stuff was so I just said,"Um, can I just say that this isn't for me,a co-worker sent me in here for gas pills" but they didn't laugh or anything. I think they thought I was lying. Oh well.