It's a reference to Baubo who shamelessly jested with Demeter to cheer her while she mourned her daughter, but what is commonly called the "Baubo siren" refers to the logo of Starbucks coffee.

She is not, the Starbucks lady is Iambe or Baubo.

Baubo is the Greek Goddess of Humor.

She is supposedly based on a 16th century Norse woodcut of a twin-tailed mermaid, or Siren.

Also called a Melusine (sometimes, Melusina).

The original logo if in Greek mythology most likely applied to Baubo or Iambe, an Eleusinian demi-goddess who presided over ribald humour practised as part of the cult rites. She was an Eleusinian woman who made the grief-stricken Demeter laugh with her course jokes and exposed genitalia.

George Devereux has written:

'A study of abortion in primitive societies' -- subject(s): Birth control, Primitive societies, Abortion, Psychoanalysis

'Ethnopsychoanalysis' -- subject(s): Psychoanalysis and anthropology, Ethnopsychology, Personality and culture, Psychoanalysis and culture

'Therapeutic education: its theoretical bases and practice' -- subject(s): Psychotherapy, Child study

'The character of the Euripidean Hippolytos' -- subject(s): Sex in literature, Hippolytus (Greek mythology) in literature, Tragedy, Psychoanalysis and literature

'Baubo, la vulve mythique' -- subject(s): Sex symbolism, Vulva, Sex

'Mojave Ethnopsychiatry'

'Reality and dream' -- subject(s): Psychology, Indians of North America, Psychiatry, Case studies, Cases, clinical reports, statistics, Psychotherapy

'Dreams in Greek tragedy' -- subject(s): Drama, Dreams in literature, Greek drama (Tragedy), History and criticism, Mythology, Greek, in literature, Psychoanalysis and literature, Psychological aspects, Psychological aspects of Drama

'Basic problems of ethnopsychiatry' -- subject(s): Addresses, essays, lectures, Cultural psychiatry, Psychiatry, Transcultural, Transcultural Psychiatry

'Mohave ethnopsychiatry' -- subject(s): Mohave Indians, Medicine, Suicidal behavior, Psychology