reading about Kirk Douglas's son Eric on Wiki. I hope this is true
Stand-up comedy
In the early 1990s, Douglas attempted a career as a stand-up comedian. He performed in New York City comedy clubs with much of his self-deprecating material coming from his status as the black sheep of the Douglas dynasty.
Douglas entered British comedy folklore when, during a stand-up performance at The Comedy Store, London,
he became angry by the audience's reaction to his stand-up routine.
This led to him shouting out, "You can't do this to me, I'm Kirk
Douglas's son!" A member of the audience stood up and shouted "No, I'm
Kirk Douglas' son," referring to the iconic "I'm Spartacus"
scene of the 1960 film starring Kirk Douglas. This ended up with the
majority of the audience standing up and repeating the line