you know, I remembered parker as just being uninterested and distracted in the hot potato job ("so, the diamond is in the potato?" "park- there is no diamond. verd agra. super tuber. haven't you been listening?") but actually I think she was led astray by the second conversation of hints and odd emphasis that sophie and nate were having during that briefing to make sure none of the team noticed sophie's bra in plain sight.
sure, hardison told her that the place wasn't bugged when she mimed the question, but if it were, she might have to figure it out through hints and doublespeak anyway, right? hints like "so, this super tuber's worth more than, say, diamonds."
when I say "and who amongst us hasn't been in that situation" please know that I am, at best, only half joking.