I'm surprised a PACU nurse would make such comments as that specialty suffers the same stereotype.
Of course, i'm also in a specialty that's been refered to (here and other places) as "not nursing", "not REAL nursing," "all OR nurses do is stand there and pass stuff to the surgeon," "OR nurses just sit on their butt and chart the whole time."
Anyway, I would have looked right at that dude and asked "And what exactly do you think we do in LDRP that's not real work? I would like to know" (the same question i've posed to the three statements i've typed above). I have YET to get a verbal response after asking that, mainly because the person's so stunned that they were challenged (quite obvious from that startled-deer-in-headlights look i get afterwards).
Then again, this may be a far stretch, but perhaps he was being sarcastic in another sense, kinda like when i joke to another nurse who's been busting her butt "all she's done today is lounged in the chair and sip mint juleps".