Derived from the Latin root "Brewski" - which means beer. The act of engaging in extremely regrettable activities while severely inebriated resulting in praise and adoration from the offenders' friends and fans who are highly aroused by tales of binge drinking mishaps, sexual follies and life altering failures of epic proportions.
Jon: Did you hear about what Mike did last night?
Erni: OHHHH GOD! I heard Dewskimania was unleashed on that poor family. Any survivors?
Jon: No.
Erni: {Sigh)...There never are.
Performance of the sexual act on a desk, generally in a corporate office environment. Possibly an attempt by a junior member of staff to enhance career prospects. Often results from a mid-life crisis on the part of more senior management. Note - likely to end in career termination if caught.