The car's filling up with pantsless people who don't seem to know or even notice each other.

车里挤满了光着裤衩的人，他们似乎互不认识，甚至没有注意到彼此。

The pantsless people are part of a group called Improv Everywhere led by a New Yorker named Charlie Todd.

这些没穿裤子的人属于名为 Improv Everywhere 的团体，该团体由一位名叫查理托德的纽约人领导。

He asks you to leave your own reality and step into his, just like every crazy pantsless guy on the subway.

他要你离开你自己的现实， 走进他的现实，就像地铁上所有疯狂的没穿裤子的人一样。