Block Island Ferry

In S14E15, "A Lot Going On Upstairs," Lois says to Peter, as he threatens to poop on her wedding dress, "Dammit, Peter, you hold that in. I know you can. You did it on the ferry to Block Island!"

As of 2016, when this episode aired, there were two ferries to Block Island, both operated by Interstate Navigation. The traditional ferry, known simply as the Block Island Ferry, makes the fourteen-mile crossing from Point Judith to Block Island in fifty-five minutes. The Hi-Speed Ferry can do it in thirty. Both ferries have restrooms, so there's really no reason to hold it in while on board.