Was that a Withnail reference in Game of Thrones?

Just a quick one (while a longer post on another topic is being prepared), but I think it's worth recording that TV phenomenon du jour Game of Thrones included what has to be a sly shout-out to Withnail and I last week (season 5, episode 7: 'The Gift').

In a delicious scene between Jonathan Pryce, as the 'High Sparrow' and Diana Rigg, having a whale of a time as Olenna 'Queen of Thorns' Tyrell, Dame Diana comes out with the line:

"You live among murderers, thieves and rapists, and yet you punish Loras for shagging some perfumed ponce?"

Perfumed ponce, eh? I think we can safely put down David Benioff and D. B. Weiss, show runners of Game of Thrones and writers of this particular episode, as Withnail fans...