One of the rarest forms of blood type among humans. A Universal donor.

O Negative
Blood type is very important because it can potentially be transfused to any patient regardless of their blood type. In emergency situations, when there isn’t enough time to determine a patient’s blood type, O negative blood is often used.

Best blood type to donate:
O +, O - (i.e. Son), B-, A- (i.e. ME) RH-
Only about 7% of all people have Type O negative blood
Type O negative blood is the preferred type for accident victims and babies needing exchange transfusions
There is always a need for Type O donors because their blood may be transfused to a person of any blood type in an emergency
O- is Universal donation for the masses. What is yours?
by KWatlonTyUniverseal April 18, 2010
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A face, similar to ^//^ and/or >//< . The o//o is a blushing face, however the eyes are open in shock or disbelief. This is not usually used as a positive way of blushing, such as ^//^ would be. o//o is usually used when someone is embarrassed or surprised.
Mom: I threw you a surprise birthday party, and invited all your friends, but they only had bright pink balloons

Me: o//o
by Sharp131313 November 05, 2013
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An emoticon used to indicate the person is blushing, embarassed, etc.
person 1: zomg, do you really like him?!
person 2: um.. o////o
by dfskdshjdsahdsa April 12, 2006
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This is the common symbol among lesbis or bi chicks to represent two lesbians about to do scissoring. Also referred to as tribadism or tribbing. It is a real thing.
"Hey Megan want to??? o/-<>-/o" "Oh yes Steph come over rite tf now lets get slippery!!!!!"
by tribadest August 05, 2014
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Average (o)(o)
Cold breasts (^)(^)
Nippels De Grande(O)(O)
Breast Implants (@)(@)
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Person 1: i got a new computer today
Person 1: o/
Person 2: grats
Person 3: Congratulations! \o
Person 1: o/*\o
by sekret April 19, 2008
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