Jay Z hints at Beyonce's pregnancy by changing song's lyrics?

Rapper Jay Z has sparked rumours that his wife Beyonce is expecting their second child after he changed the lyrics of 'Beach Is Better' during a concert.
Jay, 44, who has daughter Blue Ivy with Beyonce, 33, is seen changing the lyrics to 'she is pregnant with another one', in a video circulating online, reported People magazine.
Representative for the couple are yet to respond.
The superstar couple are in Paris to wrap up their 'On The Run tour'.