It means "What else would(or could) you be, if you were not human"
"What" in English is Che?, Che cosa? or Cosa? in Italian.
"Hi cosa" is not a phrase or wording in English. -Gibberish or foreign.
Checca in Italian means "gay (homosexual)" in English.
little thing poquita cosa = pusillanimous person
"thing"
Che cosa
L'amore è un'altra cosa! in Italian means "Love is another thing!" in English.
"What was that?" in English is Che cosa era? in Italian.
Non so che cosa fare in Italian means "I don't know what to do" in English.
"What is...?" in English is Cos'è...? in Italian.
"es cosa de dos" = "it's a matter between two"
"Hi cosa" is not a phrase or wording in English. -Gibberish or foreign.