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Farting
Fuhn Pi

Are we clear?
Duhn luh mah

Baboon's ass crack
Feh Feh Pi Goh

Bastard, jerk
Huen Dahn

Big stupid pile of stinking meat
Yi Dwei Da Buen Chup Roh

Cheap floozy
Jien Huo

Cool
Ku

Commit blunder of great magnitude
Bie Woo Lohng

Completely Useless
Tian Di Wu Yohn

Crazy dog in love with it's own feces
Ai Chr Jze Se Duh Fohn Diang Gho

Cute
Kuh Ai

Damn or Damn it
Ta Mah Duh

Despicable
Kuh Wu

Dumbass
Chwen

Engage a monkey in a feces hurling contest
G'en Ho Tze Bi Dio se

Excrement
Mi Tian Gohm

Explosive diarrhea of an elephant
Da Shiong La Se La Ch'wohn Tian

Filthy fornicators of livestock
Ung Jeung Jia Ching Jien Soh

Flat-chested
Hur Bao Duhn (literally eggs cooked sunny side up)

Fool
Sah Gwa

Homewrecking tramp
Hu Li Jing

Monkey raping
Chiang Bao Ho Tze

Shameless Hussy
Meh Lien Duh Jyah Jee

Son of a bitch
Wong Bah Duhn
or
Go Neong Yung Duh (for a more literal and viscious translation)