8 Celebrities That Have A, Um, Unique Relationship With Their Own Blood

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Trends have taken a strange turn in Hollywood, and it kind of seems like a lot of celebrities are totally obsessed with blood.

Machine Gun Kelly and Megan Fox sit next to each other
Kevin Mazur / Getty Images for iHeartMedia, @machinegunkelly / Via instagram.com

From wearing it to drinking it, celebs are doing the most — and they're not afraid to share it with the world.

Here's what these celebs did with their own blood:

1.Megan Fox and Machine Gun Kelly drank each other's blood.

A closeup of MGK and Megan Fox

2.Jim Parrack says he drinks his own blood on occasion.

A closeup of Jim

3.Julia Fox creates art using her own blood.

A closeup of Megan

4.Angelina Jolie and Billy Bob Thornton wore each other's blood around their necks.

A closeup of Angelina and Billy Bob

5.Lil Nas X made a sneaker containing droplets of blood.

A closeup of Lil nas x

6.Kourtney Kardashian and Travis Barker share photos of their vials of blood.

A closeup of Kourtney and Travis

7.Tony Hawk created a skateboard using his own blood.

8.Kiss printed a comic book using ink that contained their blood.

In 1977, Kiss teamed up with Stan Lee and Marvel to release a comic book that used ink that contained blood from the members of the band. After the blood was donated, it was mixed with red ink and used to print A Marvel Comics Super Special!: Kiss. It sold 500,000 copies and was Marvel's best-selling single issue until the 1990 relaunch of Spider-Man.