that one / that thing / that (as opposed to this) / (used before a verb or adjective for emphasis) / (used to humorously or indirectly refer to sth embarrassing, funny etc, or when one can't think of the right word) / (used in speech as a filler, similar to "umm", "you know" etc) / (euph.) menstruation / sex / also pr. [nei4 ge5]