From WENN.com

Farrow is the son of director Allen and his ex-wife Mia Farrow but he has not spoken to his father since the 1990s when Allen embarked on a controversial relationship with Farrow's adopted daughter Soon-Yi Previn.

And on Sunday, Farrow showed the wounds of his family history are still raw with a sly dig at his father's past.

Taking to his Twitter page, Farrow wrote, ""Happy father's day - or as they call it in my family, happy brother-in-law's day.""

His mother later re-tweeted the message, adding, ""Boom.""