Epath I would have responded in the same way, if I'm prepared for possible conversation then I'm not as bad as when it's random. Example we went to my daughter's school for a family picnic thing, I was prepared for some conversation as no doubt we'd see other parents we knew. We ended up sitting with 4 other parents whilst the kids ran off to play, it was still awkward but I was able to talk a little because I've known these people for 4 years now and had several possible conversations already played out in my head.
Then there was yesterday at the supermarket, I was helping my mother in law pack her shopping when the girl at the till pointed at my face and said "did that hurt?". I only just heard her because I was concentrating on packing correctly as well as the noise of a busy supermarket making my head spin. Anyway I fogged over and thought 'wtf is she on about' then she followed up with "I was thinking of getting one done" and that's when I realised she meant my piercings, so I quickly said no it didn't. My mother in law started engaging in conversation with her with me being awkward as ever, it went something like this.....
Mother in Law: No it didn't hurt her at all, she had them done ages ago, how long have you had them done now Kelly?
Me: Uhm...(trying desperately to work out the year) uhm...5 years..or 6
Cashier: Oh, I was thinking of getting a monroe
MIL: Oh you should it would look great
Cashier: Do you think? I wasn't sure because I've got this mole see(points)
MIL: Oh yes it would look great, you can barely see the mole, I wouldn't have noticed if you hadn't said
Cashier: Oh but what about the pain, I'm such a wimp
MIL: Oh go on it won't hurt
ME: (after working out that I had them done when my daughter was about 2) 5 years
MIL:What?
Me: I've had them done 5 years ago, Kyoko was still in a pushchair but I went with Marie so it would have been 5 years ago, well actually just under because we didn't go until a few months after her little boys party which was in June so it would have been about August so not quite 5 years yet.
Cashier: I like how you have 3 it looks nice
Me: (awkward smile) uhm thanks
Cashier: Did you get them all done at once?
Me: No
MIL: You had your labret done first didn't you and then got the other 2 at the same time with Marie
Me: Snakebites
Cashier: Huh?
Me: They are called snakebites
Cashier: Oh right, some people don't suit alot of piercings but yours look really good
Me: Thanks (and then thinking I have 3 facial piercings, hardly alot)
MIL: Oh I couldn't get them done, I hate needles, I always fancied a little tattoo on my ankle but I just can't handle needles
Cashier: Oh I'd love a tattoo, do you have any tattoos?
Me: Yes
Cashier: Did it hurt?
Me: No
Cashier: I bet it would hurt me, I can't handle pain
MIL: Me either, that's why I've never had one done and I'm too old now
Cashier: Oh don't be silly your not too old
MIL: Oh I am, I'm past all that now
Cashier: I think it's fine if people in their 40's get tats
MIL: Oh aren't you lovely but I'm not in my 40's, I'm in my 60's
Cashier: Really? oh my god you would never guess you look so young!
MIL: Well thank you, that has just made my year
Me: You have your hands injected for you arthritus, I imagine that's more painful then a tattoo ever would be (yep I was still on that)
MIL: Yes but it's probably a different pain
Cashier: Right that will be ?62.54 (or around that, it was 62 something)
MIL: Gosh that is alot I only came in for some bread and a few bits
Cashier: Yeah I know it's terrible isn't it
Me: Well you did get a bottle of wine that cost ?10, Kyoko's toy that you got her was ?6 and you have lots of organic vegetables too it all adds up very quickly
MIL: Mmmmm yeah, it's amazing how no matter where you go with her she manages to talk you into getting her a toy, I dont know how she does it, it's like she hypnotises me *laughs*
Cashier: awww but I bet she's worth it
MIL: Oh yes she's lovely
Cashier: Have a nice day
MIL: you too, bye
Me: I mumble a bye as I push the trolley away
That is pretty much every random conversation I have, except if I'm on my own there is no one to keep it going because I take so long processing what they have said that I either miss the opportunity to tell them things or I get so flustered I just answer yes/no/ or whatever the quickest response is.