A term of endearment for a person being of mixed[ [Asian (namely Chinese) heritage, hence the "chinky" and Latino (namely Mexican) heritage, hence the "bean".
Can also be considered a double entandre for the perfect love.
V:The girl over there is the most amazing person in the world.
A:Oh you mean my chinky bean?
V:Yeah her.
A:She's my perfect love, Love Always.
The act of a mexican and a white guy performing disturbing, disgusting, vulgar and raunchy activities within a sleeping bag.
EX.
Friend: Hey did you hear what he did this weekend when he went to spend the night?
Friend2: No what?
Friend: they did the Dirty Bean & Cheese Burrito.
Friend2: Fags