Double Rainbow Guy is the internet nickname of Paul Vasquez, aka, Yosemitebear, who became famous on Youtube in mid-2010 for posting a video of his own reaction to a "full on double rainbow" he saw in his backyard near Yosemite. To date, the video has been viewed more than 18,000,000 times.

In the video, Paul's overly effusive reaction to the rainbow (including multiple cries of, "Oh my God! It's a FULL ON DOUBLE RAINBOW!" and "What does it mean?!") have led some to question whether or not he was under the influence of drugs at the time (Paul says he was not). Regardless of his mental state, the video ends with Paul gushing in tears, completely overpowered by the beauty of the double rainbow.

Paul later told ABC news, "I was just on pure rainbow power." The original video can be seen here.