Sir Mick Jagger
Mick Jagger of The Rolling Stones poses for photographers as the band arrives for the opening of the new exhibit "Exhibitionism: The Rolling Stones" in the Manhattan borough of New York City, U.S., November 15, 2016.Reuters

Twitterati had a field day on social media after news of Rolling Stones' frontman Mick Jagger becoming a father again at the age of 73 surfaced online. Jagger's publicist confirmed the news that he welcomed his eighth child with a 29-year-old ballerina Melanie Hamrick.

Jagger's girlfriend Hamrick gave birth to a boy in New York on December 8. His publicist Bernard Doherty issued a statement saying that they "both are delighted" at the birth.

"Their son was born today in New York and [the parents] are both delighted. Mick was at the hospital for the arrival. Mother and baby are doing well and we request that the media respect their privacy at this time," his publicists told Vanity Fair.

The 73-year-old singer has eight children, including Jade, Elizabeth and Georgia May, five grandchildren and one great-granddaughter, who was born in 2014. The eldest child is 45 years old and the seventh child is 17 years old.

After the news of Jagger becoming a father again at 73 broke, Twitter had a field day, as several users took to the micro-blogging site to mock the singer. They expressed their reactions in hilarious ways on the social media platform.

"Mick Jagger is a dad again at age 73. Why? I mean I know how, but why? Poor kid will never really get to know him," one user tweeted. ""Mick Jagger Is Dad at 73" is certainly a read-it-carefully headline," another user said.

"Mick Jagger becoming a dad again at 73. That is some ancient spunk there. Probably smells of mould and tastes of sour milk," another user said. "Mick Jagger just had a kid at 73 and i can't even get a text back."

"Mick Jagger being a father again at 73 is both wonderful and odd. His new child is now younger than his great-granddaughter. God bless him."