an often humorous image, video, piece of text, etc. that is copied (usually with slight variations) and spread rapidly by Internet users.
Most often he comes across your eyeballs on a neon-pot leafed, smokey background. He's just about the happiest, most blissed-out dog you can find. He's a member of the Advice Animal tribe, and talks in the flavor your brain smells around 4:20.
Stoner Dog was first seen in 2006-ish, found on random Russian sites, with another dog on a boat. He didn't get spun off as a lone wolf until 2008. The first person to add a pot reference to him was on December 14th, 2009, with the apt notation "totally man." He hit reddit in 2010 (Stoner dog makes me laugh every time) and naturally blew up from there.