Vanessa Hudgens -- Screw Disney -- I'm Pushin' Pot Now!

Zac Efron has nothing on Vanessa Hudgens ... she's using the Disney moniker to push the finest weed around.

Vanessa was out joggin in Runyon Canyon in Hollywood yesterday, wearing a tank top with the word dank -- slang for good weed -- with a marijuana leaf for the letter "a" and the Disney "D."

It's sort of amazing ... another Disney star turning on the mouse.

It sort of gives new meaning to "High School Musical."