The bathrooms of Washington Avenue's Darkhorse Tavern are museums to both male and female sexual exploits and skullduggery, if only in literary form. It's as if they were decorated by a schizophrenic with a bag of axes to grind. The girls' room looks like an NC-17 burn book from the movie Mean Girls, while the boys' scrawls take shots at the sexual mores of Kermit the Frog and longtime gal pal Miss Piggy, among other characters. One thing is clear: Whoever Katie is, she really needs to back up off Trent.