Abbreviation for Cringe, Wither, Die (or cringe, wince, die).
Used when something particularly disturbing (ohmygodIcan'tbelieveIjustsaidthat) has been said.
Basically, it's a more modernized version of TMI.
A: Holy shit, I saw this kid with acne ALL OVER his face today. There was acne on his forehead, arms, neck, cervical-
S: Oh, Lawrence? yeah, remember the guy I told you I lost my virginity to? That was him.
A: ...
A: CWD CWD
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