吃屎都趕不上熱乎的

1. • if you were eating warm shit, it'd be stone cold by the time you finished it (saying)

     lit.

2. • (of a person) too slow can't keep up

     fig.

Character by character

• 吃(chī)eat
• 屎(shǐ)feces
• 都(dōu)all
• 趕(gǎn)overtake
• 不(bu)no
• 上(shàng)up
• 熱(rè)warm up
• 乎(hu)(classical particle similar to 于 yú) in
• 的(de)of; ~'s