A hangover that lasts all day. The day after a fun night of drinks that is filled with remorse, regret and headache. Headache that is so intense, it feels like having been shot in the face.

A reference to Dick Cheney's hunting accident that resulted in his friend (Harry Whittington) being shot in the face.
"I having a Dick Cheney Day; my head feels like it's going to explode."

"I drank way too much last night, and having a Dick Cheney Day today."
by Laudley January 10, 2009
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