Animated "Give Blood" PSA

[dth1971]

Is anyone familiar with the animated PSA for giving blood that features a superhero telling people who are laughing at him "What's the joke? What's so funny?" - What is the plot of this?

[launchpad25]

Public service announcements rarely make sense to me anymore. That's why i can't take them as seriously as they claim to be, and avoid them as much as possible.