Blood can either be shunted from the systemic circulation to pulmonary circulation (left-to-right shunt) or between the pulmonary circulation and systemic circulation (right-to-left shunt).
A BLUF (Bottom Line Up Front) is a paragraph where the conclusions and recommendations are placed at the beginning of the text, rather than the end, in order to facilitate rapid decision making. This differs from an older, more-traditional style in which conclusions and recommendations are included at the end, following the arguments and considerations of facts.
A Acronym that stands for Down To Fuck. DTF was first heard on the reality show Jersey Shore. It refers to nasty slutty whore's who are willing to go home with some random guy they just met (In most cases the girl is drunk but not always) and fuck. Afterward the girl will usually leave on her own but in most cases the guy will kick her out once he has been satisfied.