Is it normal to unite your blood with your friends blood?
So, a few days ago I was joking around with one of my best friends about my fascination of blood and then she told me that she and one of her friends used to cut their thumbs and then unite their blood. I kind stared at her and was like, "..gurl...wut..?.." and then she told me it was to symbolize how she and her friend were like sisters and so I thought she was kidding of course (since she was giggling while she spoke). However, she wasn't. Now she wants to unite her blood with mine too... Idk I think blood is awesome but I find this activity quite strange and unhygienic.. what do you think?