That rule is most likely there for the same reason I always make sure I'm wearing clean underwear when I'm rolling in the gi. When the pants' waistband is used as a grip, your underwear is very likely to see the light of day. If a women is wearing a thong, it may be deemed inappropriate in a tournament setting. Kind of ironic that the same culture invented the brazilian wax
What are you doing that causes your underwear to get "visibly dirty"?
That rule is most likely there for the same reason I always make sure I'm wearing clean underwear when I'm rolling in the gi. When the pants' waistband is used as a grip, your underwear is very likely to see the light of day. If a women is wearing a thong, it may be deemed inappropriate in a tournament setting. Kind of ironic that the same culture invented the brazilian wax
So you only wear clean underwear when you roll in the gi? So when you roll no Gi u leave the dirty ones on?
I've rolled with guys that apparently dirty underwear, or some sort of funk, was a weapon in their arsenal. It made me reconsider certain passes and/or positions.