Yamasaki VS Jimmy?

A Japanese variety show hosted by the popular Japanese owarai duo, Downtown

Haha, someone care to explain what is going on here? Since these two are involved, you know it is amusing, hahaha. Is there also a subbed/longer version of it if so?
Omg~! i thought it was hot water~ didn't expect freezing water to be poured on them XD
i think its melted wax lol
They yell "Atsui!" as soon as the liquid touches their heads, so it must be something really hot. Melted wax? I don't think it can be that fluid.

I like it when Yama-chan kicks his own car, and then Hamada starts a weird dance in the background :rofl: .
Its wax: 蝋 (ろう - Rou)