Why did the nurse need a red pen?
In case she needed to draw blood!
😂
Vintage Wordplay
Did You Know?
Drawing blood (phlebotomy) is one of the most common medical procedures. A trained phlebotomist can draw blood in less than 5 minutes! The human body contains about 1.2 to 1.5 gallons of blood, and a typical blood draw only takes about one tablespoon.