The act of acquiring an extra hour or two of sleep through the use of a vague medical condition as an excuse. Kirking requires you to show up at 9:30 to 10:00 am thus allowing you to maintain your ability to give others a rash of shit if they take a sick day.
"It's 9:30 and the boss still isn't here. He must be kirking this morning."
(Verb): the act of throwing up at your friends birthday party and babycrawling to the toilet. Also eating fucking bread!
Dude, Kirkland was Kirking hard last night.
Thomas: Is he still alive?