What book illustrated by an illustrator and author who has written and illustrated a children's book about marijuana: "It's Just a Plant", reached No. 1 on Amazon.com's bestseller list a month before its release?
Ricardo Cortés (illustrator):  He illustrated "Go the Fuck to Sleep", Adam Mansbach's bedtime story for adults, and "I Don't Want To Blow You Up! Go the Fuck to Sleep: Go the Fuck to Sleep is a book written by American author Adam Mansbach and illustrated by Ricardo Cortés.
Go the Fuck to Sleep