The term 'leave, in slang' can be expressed in two different ways. The first is 'BLOW', which is a four letter word that means to depart quickly or suddenly. This phrase is often used when someone needs to leave a situation quickly or unexpectedly. The second is 'JET', which is a three letter word that means to move at a very high speed. This phrase is often used when someone needs to leave a place quickly and efficiently. Both of these terms are commonly used in slang to express the idea of leaving a place quickly.