为什么憋尿能行千里，憋屎寸步难行？

to hold in (urine)

feces; excrement; a stool

(coll.) urine

(used after an attribute when it modifies a noun)

(joining two nouns) and; together with; with (Taiwan pr. [han4])

ten thousand

(not) at all

an experience

(fig.) zeal

(bound form) to reckon accounts

for what reason?

disparity

(bound form) having; with; -ful; -ed; -al (as in 有意[you3 yi4] intentional)

variant of 那麼|那么[na4 me5]

similarly; also; too