Because...I have anal seepage! (God, I would love to call into work and use this as an excuse!) IF I had a job at the moment...
I have anal glaucoma... Just can't see my ass going in today.. And I have called in,and used this one! lol Boss was a cool guy,and allowed me to take a vacation day,it was also Cinco de Mayo..
...because I've got a bad case of explosive diarrhea. This one will usually work 'no questions asked.'