a concept used to explain why something will miss its deadline. Common in publishing.
Nathan's game review will be late because he's wasted time excuserising why it will be late, rather than finishing the assignment.
to think of an excuse and the answer to any question which may arise from that excuse.
basically, making sure you're excuse is a full and matching outfit. not an evening dress with a backpack you grabbed at the last minute.
'so you ready for college today?'
'yeah...i've just got to excuserise before Psych hand in'