Smirfy Doodle Head
(n.) A person addicted to the drug heroin, often referred to as a "smirf". Seeing as the drug brings you brainpower down, you are referred to as a doodle head. Bring it all together, and you have a "Smirfy Doodle Head"
"I wish I never had to deal with that smirfy doodle head robbing me to get high in the first place, he ruined my night"