Multitasking

Performing many tasks at once, yet none very well. This term first saw use during The Great MBA Cock-Up of the 1980s and 1990s during which middle management worldwide became flooded with new, yet wholly clueless and ill trained, apprentice managers. These MBAs were stamped out as though by an ill-formed factory cookie cutter creating the same bad shape by the tens of thousands. It has gained further use to explain poor performance in nearly every human endeavor possible, from parenting to rocket science and brain surgery.

Anyone who claims they are "good" at multitasking is a damned liar.