Screw up your case interview completely? Have a horrible resume? Unable to add/subtract “difficult” numbers like 1 and 5? Were sure you had qualifications but can’t remember them?
The ultimate, line-in-the-sand, go for all-or-nothing tactic: tell them the real reason to hire you (courtesy of Dilbert).
(Blogged from Japan, where I’m spending my first vacation as a salary man for… “the man”. Will blog more and post pictures upon my return!)