(slang) Usually meaning a female is easily aroused by a man's sexual organ i.e penis; Somone who has premature ejackualtion(in another word, someone who cums quickly).
(the way i use it)When a maths question can be easily solved, i always use this word at the end.
e.g 'oh, mannn, this question is soooooooooo EEEAAASY!'
When a guys horny asf and they need to fuck someone they go to the easy girl and fuck them till their legsshake.
person 1- bro im hiding my boner with my books
person 2- just go find sarah and tell her to go to the bathroom shes easy.
person 1- good idea shes gon a get it good.