Well thats a completely different ballgame man. Apples to oranges. Of course in that example you just grab both waistbands and pull down. Its all about the time spent!
In light of that (time spent); when you're wearing pants - instead of just unzipping your fly (i.e. your pants cock slot) and going right through both slots, you unbuckle your belt, unbutton your pants, unzip, and then pull down your drawers? And then the reverse on the other side?? All that extra time and effort! I'm thinking your adding an extra 5 seconds on either side of the event doing all that. 10 seconds times, say, 6 times a day (I don't know, how much water and/or beer do you drink?) times 7 days a week, 52 weeks a year, (lets call it 60 for the math), times, say, 70 years is 70 hours! Thats like three days of your life wasted fumbling with a belt and buttons instead of just using the cock slots for their intended purposes!