Khalifa, 25, alerted his Twitter followers that Rose was about to give birth on Thursday by writing "daddy time" with a picture of himself wearing scrubs. The couple, who became engaged in March 2012, announced baby Bash's birth on Twitter shortly after by wishing him happy birthday.
"I'm so happy you guys. I fell in love all over again," Rose said. The rapper added, "Everyone welcome this perfect young man into the world."
Khalifa is now focused on taking good care of his son and future wife. "My wife said she just wants a Jack & coke, a cheesesteak, and a cigarette," he shared early Friday morning. "That's why I'm marrying that woman!"
"Thanx for all the love guys," he added to his fans. "Bash took his first poop, had a good meal, now he's peacin."
The new parents have received many well wishes from their friends including Rihanna and Snoop Dogg.
"Congratulations to my fam Wiz and Amber! Welcome baby Bash! You're born in an exquisite month," the "Diamonds" singer, who celebrated her 25th birthday on Wednesday, tweeted. "Baby Pisces."
"Welcome to fatherhood Wiz! Congrats to you and Amber on your new son -- he got the same Cday as Cordell Broadus!" Snoop Dogg (real name: Calvin Cordozar Broadus, Jr.), a father of three, wrote about his son. "Bless up."