The phrase is part of "nudge nudge wink wink, know what I mean? Say no more, say no more, a nod's as good as a wink to a blind man"
It implies that not everything is being said clearly and completely, that some message is implied. The question "Does she like candid photography?" implies that she may like to have "naughty" photos taken of her.
The irony and great humor of this bit is that the questioner, played by Eric Idle, has not a clue of what he's talking about.
great fan of Monty Python