Poisoned Chalis: A prize that has had its lustre taken from it by an act or situation that makes recieving the prize much less palatable.
Poisoned Chalis: A lesbian that turns down your offer of sex but wants to remain friends.
Oh man look at her she's beautiful. I get a boner whenever she walks past but she's as lezzer as they come mate! I want to be her friend but I know she will never shag me - thats what I call a poisoned chalis.