Thanks for the replies. I'm glad I'm not the only one who gets dirty looks whenever I get the dslr out with big lens, speedlite and stofen omnibounce.
I took some pics the other day of my little nephew kissing his mum on the beach. It wasn't dodgy or anything. It was just cute. I turned round and saw this elderly couple staring in horror

Me and my sister had fits of giggles over it.
*Sigh* we live in such a suspicious society whever happened to innocent until proven guilty?