Why did the vampire open a smoothie stand?

He heard type O was in high demand.

Did You Know?

The joke plays on "type O" blood—both a blood type vampires would crave and a smoothie flavor! Type O negative is called the "universal donor" because it can be given to patients with any blood type in emergencies. Blood banks constantly need Type O donations since it's used in about 45% of the population and is critical for trauma situations when there's no time to test a patient's blood type.