Chief Keef is optimistic about going to rehab for the next 90 days, according to his words with a TMZ camera guy after he landed at LAX Saturday (Nov. 10). 

Asked if time in treatment can break his weed addiction the teen replied, "Yup," but was more forthcoming about community service at an Illinois horse therapy center. "It's cool," Keef said. He also mentioned why he chose to complete his 60 hours at the stables. "I like working with kids, that's why."

Later in the 90-second exchange, Keef — whose latest jail stint stemmed from a May speeding ticket — introduces his alleged driver (a friend walking next to him) and proclaims himself "grow'd up," before changing the statement to "glowed up," as the clip ends. 

Keef was released from jail in Chicago Friday (Nov. 8), and was sentenced to rehab after he failed a string of random drug tests. He is expected to spend the next three months at an undisclosed rehab center near L.A. 

Afterwards, the "I Don't Like" rhymer will begin work at Horsefeathers equestrian center, aimed at "using horses and ponies to improve the quality of life for children and adults" with disabilities.

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 (Photo: Johnny Nunez/WireImage)