Yeah, earlier on when she was taken prisoner by the bad guys, a guy had been making rather disrespectful sexual comments at her and expressing an interest in utilising her panties in certain acts, so later on when the good guys have the guns and have taken the evil boss hostage, she pauses on the way out of the building to take off her panties, commanding the guy to open his mouth and when he does so, shoving them inside. He's just standing there like 'what'. Then she calls him a pig and forces him to chew them, so he does, looking pretty uneasy about the whole situation.
I guess the point is that she subverts what would otherwise be something which degraded her by forcing it upon him, thus humiliating him and mocking his previous attitude which, stripped of its context of masculine domination, is actually just silly.
Of course, they take her prisoner again, turn her into a crack whore and presumably systematically rape and abuse her for several years. So I guess feminism doesn't get the last laugh in this story.