I'd argue Amy's man-hating lesbian attitude did that worse than the animation, girl rubbed me the wrong way from the moment I started the game and just kept getting worse the longer it went.Don't remind me of that scene. It was so badly animated. A complete boner-killer.
Art in the game seems to suggest it's possible to get Melissa anally in more ways than just during the dinner, but damned if I know how to do that, and since completed save files don't let you replay specific events (such as Mary's milking) using someone else's save is pretty useless for that.