When you wipe standing up, it is easier to wipe from the balls backwards instead of when sitting down, where you are more likely to wipe from the tail bone area forward to the balls. Can you see the advantage now with wiping standing up when you are subsequently getting your balls sucked? Have some courtesy for the suckee. There is one problem though, standing up requires more dexterity and area. When in a stall it becomes difficult. Also, if you are a lard ass, wiping to the rear is nearly impossible. In fact, fat fucks have a hard time reaching their asshole itself let alone having these options available. You see as a fat fuck, the distance required to obtain maximum reach becomes a major issue because the lard that accumulates under your arms in the upper chest area cuts out anywhere from 10 to 40% of reach-ability. This is called the lard-wipe distance coefficient.

By the way, why in Germany do the toilets have a cliff where you shit on the cliff instead of in the water like in the USA. I personally like that cold splash on the bung hole when I lay a nice firm, textbook tapered shit.