I found myself (when I wore pants after a LONG run of wearing kilts daily) having to stop and think when I went to the bathroom. Without being too graphic...

I stood in front of the bowl and reach down to my knees to lift the kilt when I realized I was weaing pants. It took my brain almost a full second to remember that I had to UNZIP first. In that split second, I got very nervous and my brain went thru the following process: "oh shoot... I really have to go! What do I do now?! Oh yeah... unzip." I thought it was pretty funny at the time.