The poo manchu is similar to a dirty sanchez, however additional lines of poo are drawn perpendicular to the horizonal mustache. Similar to a fu-manchu, except with shit.
I was banging this girl and things got freaky. She was tired of the Dirty Sanchez, so she asked for a poo manchu.
A Pookachu, in not at all related to the popular Pokémon anime syndication though casual observers may think it appears so due to the similarity of spelling and diction, Rather, a Pookachu is a feminine noun indicative of one who possesses an abnormally well developed sense of empathy coupled with an unmistakeable degree of passion, devotion, and commitment for her singular universal soulmate. Extremely rare in nature, she is evidenced by unbreakable dedication, impossible devotion, steamy sexuality, and a tireless commitment to being a true lady in the manner exemmpkified by women in the United States during the first half of 20th century America.
A squalid vagina; or more specifically, a black hooker's stank-nasty vagina that does not get skull from the mens.
"We just straight out fuck. That's it. Two minutes and we're done. He ain't never ate... the poonanchee... right?"
"Please get your poonanchee away from my face. It smells like burnthair and stale farts."