Flight of the Cosmic Hippo is the second album by Béla Fleck and the Flecktones, released in 1991, the album title came from an audience member who suggested "Flight of the Codeine Hippo" as a name for the title track, codeine is an opiate used to treat pain, as a cough medicine, and for diarrhea, and the total duration of its effects last for about how long?