blood in, blood out 

A therm related to gang culture.

Blood in . To get into a gang, you got to spill some blood, usually murder.

Blood out - The gang is for life. The only way to get out is to die.

-Man, Don't mess with those guys, they're blood in, blood out.

blood in, blood out by Amys April 5, 2006

blood debt 

A "blood debt" is a serious obligation. The usual payment contemplated is blood debt is blood for blood.

You owe a blood debt. Your life may be the price for your father's transgressions.

blood debt by Monkeyhead May 5, 2016

Blood Butt

When you wake up in the middle of the night and realize that your period blood has flown from your vagina past your taint to the butt crack, and in some cases to your ball sack.. no tanpon or pad can control it.

My friend Dava had a terrible case of the Blood butt

Blood Butt by AgkDncSls April 14, 2010

blood fart 

1. An expulsion of air from the anus, accompanied by any quantity of blood.

2. Any amount of blood forcibly expelled from the anus.

Kathy's skirt flapped wildly when she ripped a killer blood fart in the middle of third period gym class.

blood fart by Allah Pinya March 11, 2003

Blood Brain 

during the act of fellatio the tip of the receivee's penis becomes very red, almost like a blood blister or a hickie

you wouldn't believe what kind of head jewel's gave at mikes party, straight up blood brain bro!

Blood Brain by Lord-Gore April 5, 2010

Blood Killer 

A crip

a blood killer is a crip that kills bloods or, a crip that dont like bloods or, just a crip!

Blood Killer by YungChoppa June 27, 2009

Blood sisters 

Term used when two girls (well, obviously) cut themselves and mix their blood. Can be drinken or just pressing the cuts against each other.

I acquired a blood sister on Feb. 18.

Blood sisters by Charlie Storm April 21, 2005