Winzip error

I get up in the morning and got myself ready for work as usual then went about my business as usual (including being dropped off at a public area and walking accross the bridge to get to my office) followed by a 1 hour introductory presentation to the students I will be assisting throughout the year, which went pretty well if I may say so. Finishing early I retired to my office to check my e-mail, I picked up my keyboard to reply to a moderately important e-mail and realized one important detail, my zipper was undone, at that point I also realized that I haven't gone to the toilet once since I left home....