A Wolverhampton man who claimed Barack Obama was an alien punched his mother repeatedly because she laughed about it, a court was told.
During the fight Shaun Watson, 25, told his mother: “I have hit bigger men than you and they have gone down.”
Despite the prolonged beating, Watson, of Merridale Street West, received a three-year conditional discharge.
Kerry Lovegrove, prosecuting, said that Watson had been out drinking with his mother and girlfriend on April 28, 2014 and that the three of them had returned to his mother’s home in Telford.
Miss Lovegrove said a row had broken out between them about government conspiracy theories and the neighbours had called the police.