Kylie Jenner's boyfriend Tyga
was the culprit in revealing another fake story pregnancy news. While on the family ski trip to Vail, Colorado, the sisters were shown blindsided by the news that their only brother was engaged to Blac. Instead of well wishes, the siblings sat around slamming their brother. On 'KUWTK,' Tyga pointed out that if Blac had a son, it would be the only child in the family with the Kardashian name
. The scene was filmed on April 5, 2016, but it wasn't until a month later, on May 6, 2016, that Rob and Chyna revealed that she was pregnant – which Tyga clearly busted.