Maybe the sleeping with fishes comment was another of these examples.
Or "the Fishes" is someone's nickname or username (not here, though - I checked), or it refers to some people named "Fish" or we are to take it most literally: she is on a vacation, drifts in a lake or in the sea, enjoying the water and dozing while being surrounded by fishies.
I am very amused that someone could be speculating that Miss Chicken
is sleeping with The Fishes
I suggest that if she has taken a lover during her board absence she should encourage him/her to join and grab that user name.