(law enforcement) is a person who comes from a family in law enforcement and continues in the "family trade". Blue being a reference to "The Thin Blue Line"
Dave can't help it if his career is moving so fast, he's got blue blood.
the elite, wealthy,aristocratic.
comes from when the aristocrats used iron cutlery to eat, the exposure to bad quality iron eventually made their blood blue.
normaly refers to english.
Usually posts online on a message board like fitmisc. Has been known to post in Youtube comment sections as well. He has two sides. Gagging on the D if you're someone he thinks is kewl(and is usually not), or being an obsessive mentally ill homosexual who is triggered because he can't win an argument and looks dumb. Usually he pesters the people who won an argument against him, like he thinks about them all the time. Overall just a very stupid and annoying person who takes his name BlueBlood to mean he's scary but his real name should be BlueBoy.