1: A bad lay, esp. one where the dame lays there and might as well be sleeping.
2: Extremely tired and worn out, typically after long, hard hours at work or some other institution of paid torture.
Man 1: Suzy has a great body.
Man 2: Ya, but she's a total chlorofuck.
Woman 1: Leave me alone, 12 hour swing shifts have me totally chlorofucked.