‘I love science. And cake,’’ an academic named Mary Shelley-Breath announces late in “Birth Breath Bride Elizabeth’’ to an audience that, by that point, can only be described as captive.

There’s no doubt that Mary loves cake. She furnishes abundant and messy proof of that in this strikingly original solo show by the Boston fringe company Sleeping Weazel, written and directed by Kenneth Prestininzi and presented last week as part of ArtsEmerson’s The Next Thing Festival.