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. [nèi ge]