blood bin 

That certain time of the month.

"Hey darl let's fuck"
"Sorry I'm in the blood bin"

blood bin by khelly May 20, 2008

blood bind 

the combining of two or more person's blood to be close in some way.

The two friends decided they wanted to be best friends and took a needle and pressed their fingers together, creating their blood bind.

blood bind by Kelsthatgirl March 15, 2017

Bloody bindi 

When you bite a person's nipple off and spit it on to their forehead.

I lost my nip to the bloody bindi.

Bloody bindi by Daggerpaws May 24, 2018