What was Col (the bartender) going to tell Fergus? (SPOILERS)
When Col realizes that Fergus fancies Dil, he starts to tell him "Look, you should know that she is....." and then changes his mind.
When I watched this scene, knowing the forthcoming twist, I thought he was about to disclose that Dil is a man. However, after the reveal it becomes abundantly clear that the Metro is a trans bar; anybody who walks into a trans bar would likely already be fully aware that any girl in that bar (especially the manly looking ones) probably has a schlong.
So what would Col have had to tell Fergus that he shouldn't already know?