What he really means Neil is he would have to clean the window first but to do that he would have to move all the computers stuff to get at the window which would take all day .
and if he cleans the windows them he would also have to wash and put the curtins back up as people would be able to see in again.
And if he washed the curtines he would have to clean the rest of the room so sod it
anyway he has not got time to look out the window