sunshine in my pocket means you got some weed with you, not always in your pocket. this term came to be used only a few years ago and its become very popular. whenever you hear "sunshine in my pocket" it means they got weed somewhere with them.
"ay bro i got some sunshine in my pocket"
"yo i have sunshine in my pocket bro "
This is a colloquialism from the tweaker vernacular, indicating the speaker is currently in possession of methamphetamine (ice). It is derived from the semantic shift of "wake up" to getting high on methamphetamines.
When you receive a hand-job through your pants or some other form of clothing usually through a pocket
Zack: Dude I thought you and that girl were gonna go somewhere and do something
Alex: No she game me a pocket full of sunshine right in front of everyone
A pocket full of drugs of some type, typically weed, or some other type, since hippies associate themselves with the sun for some reason.
"Hey Bob, that football captain guy is sooo hot that I get a pocketful of sunshine when I see him."
"what? You get a pocketful of drugs from him?"
"No, he just makes me sooo hot..."
"Where'd you get that definition? From that first definition of pocketful of sunshine that retard made?