Ingrid Bergman gives a virtuoso solo performance in this Jean Cocteau one-act called The Human Voice. The plot of this hour-long piece is a simple one: a woman, devastated after her lover leaves her for someone else, speaks to him on the phone one last time. (in the theatre and I suppose also here in this fragment, there’s nobody on the phone of course)
You can talk on an imaginary phone (use your POS card!) with an imaginary person. Also when a kid plays with something (that looks) like a telephone, you can play this improvisation. A month ago, I talked with a Romanian kid. She understood nothing (I talked Italian) and I understood nothing! But we both (and everybody around us) had fun!