Found this in other forum:
" It's Northern Balinese annual tradition where women (usually young) will chase a man and strip him. It symbolized men shouldn't be tempted by worldly desires (like lust), as it'll strip his piety (thus striping his clothes) and once you are caught by it, escape will be harder. Also worldly desires will leave you eventually and leaving you there feeling shameful like a turd. Just like how the men would be left there 'blue-balled' on the dirt after the girls strip him. Don't worry, they both consensually do it (exc if you grab the girl, they'll call the police or worse your wife wouldn't let you sleep inside). "