monday d'ohshits
The early-Monday-morning forgetfulness that plagues individuals returning to the weekday routine. Usually results in abrupt turnarounds on the sidewalk or u-turns on the road when the commuter realizes he/she has left their files/iphone/lunch at home.
Andrew had a case of the monday d'ohshits, and climbed onto the downtown bus before realizing he'd left his pants on the bedroom floor.