The act of taking advantage of ones hard work and kindness and never giving credit where due. This also is an act when someone tries to use your skills and and time until one reaches their limit. The limit is usually the breaking point of that relationship.
Using people up to all their resources and taking credit of all that was done is also associated with this term. Simply put its using people and then acting like that one hasn't but still remain to use people for self gratification.
Act of getting used and/or screwed.
Act of fucking one over.
"Oh man, I got beasled by my boss."
"Damn, the cops beasled me this evening."
"I beasled my female partner last night and didn't return the act, and passed out right afterwards."