OUT SNAPPING

I set forth in the evening to catch a blip on the River Forth; it seemed there was no blip biting until I spotted a snapper snapping. Such luck! Immediately I snapped into action and took a snap, afterwards telling the catch that should she manage to spot the blipping of her on Facebook she could boast to friends that she was snapped on holiday while snapping. Or, are we always being watched:is sydbin MI5?

So the question is: "when is blip a snap?" I don't know, do you?