I fear that I insulted hms_seahorse's intelligence as her reference to Operation Yewtree shows that she clearly understood the other meaning & was making a joke that I just didn't get. Honestly, I didn't mean to do that (I'm sorry!) - I just didn't want someone else (another unworldly clueless expat like myself!) to bumble along with it, like I did, not knowing any better! I'm usually better about prefacing 'you probably already know this...'
I got laughed at & teased so much about it by my work colleagues that one time - it's not a word that I'll be using much any longer, in any sense.
No, no worries! I'm more peeved that your colleagues would take the piss. I like to cut people off at the pass by just saying, "DO YOU CALL DENTAL FLOSS DENTAL FLOSS, OR DO YOU CALL IT, LIKE, FANG FILAMENT." (I like to use my American voice for these purposes.) Because the simplest terms ::can:: trip you up sometimes. Exhibit A:
http://s3-ec.buzzfed.com/static/enhanced/webdr06/2013/5/31/14/enhanced-buzz-7535-1370024882-19.jpg That's why I tried to make a joke about having to ask for a razor, as if I'm up to embarrassing, clandestine business. I know it's silly to want to know, because it ultimately doesn't matter, but that doesn't stop my being curious.
Incidentally, my husband is under the impression that they're behind the counter because the sale of razors is age-restricted. I can't find hard evidence to back this, but there seem to be quite a few anecdotes on the Google search results.