I read the info that some links provided. Here is the ostensible link between oil and nudity. We - the bikers- are naked and defenseless against you -the auto drivers- who pollute the air, create road rage, and run us over occasionally.
OK its a weak connection but I didn't come up with it.
I must admit I think it's funny. If I were in texas you'd see me on the sidelines laughing my head off too.
You would NOT see me nude on a bike. After all our discussions on chamois, chamois buttr, rashes, and saddles, the thought of nothing between my sensitive areas and a saddle - no way. Yowsa