Kim Kardashian’s nephew is ‘the best birth control ever’

Kim Kardashian has joked that her nephew Mason is ‘the best birth control ever’.

‘Let’s just say Mason is the best birth control ever!’ the 29-year-old joked on Ryan Seacrest’s KIIS-FM radio show on Thursday morning.

‘I’m definitely happy to wait awhile.’ she added.

Mason is the son of her big sister Kourtney.