A mawashi underneath?! YOOOIII!!!!! Ouus! Ouuus! Ouuus!
Seriously, I can't wear bacon when my eggs are being pounded by the saddle. Chafing is only funny when the guy next to you is suffering from it. Hence, just the riding shorts and al fresco underneath.
On the flip side, I've seen a bunch of roadies pass a group of women once...
Several meters before they reached the women.. they uh......... made sure their *ehem* endowments were already at attention so as to give the women something to glare at. Lycra is so convenient for spontaneous exhibitionist displays eh?
The more things change, the more they stay insane.
My first time wearing cycling shorts last Sunday. I pedalled all day, and thank God I dint wear briefs. Twas my first time dint feel any pain on my 'dayunyors' I'll stick to cycling shorts on whole day rides. If its just an hour or two ride/s briefs would do.