Wiz Khalifa's mother introduced him to marijuana.
The 'See You Again' hitmaker's mum Katie 'Peachie' Wimbush-Polk says the rapper picked up the habit as a curious teenager after she and her pals smoked weed around the house.
Peachie, 51, told The Sun newspaper: "He would smell it coming from my room with me and my girlfriends. He always knew there was a good time going on because there would be laughter and a pungent smell.
"When he got older, he would steal the marijuana butts I would leave, and smoke them."
Wiz's mother also reveals the pair even smoked the substance together as a way of bonding.
She said: "Before I went to work, before he went to school, it was our way of bonding. We would smoke together. He got his habit from his mother."
Wiz has previously claimed his weed habit costs him a massive $10,000 a month.
And the star, who was previously married to Amber Rose, has Peachie's seal of approval over his rumoured romance with Rita Ora.
Wiz's mum said: "I like her, I'm a fan ... I think she's cute.
"When it's serious they come home to dinner, I don't care who he brings home to dinner as long as they love him."