An acronym for "how about you shut the fuck up". You can use this for if you want someone to shut their whiney ass mouth, and make them look dumb for not knowing what ot means.
Person 1: "AND THEN SHE GRABBED MY-"
Person 2: "Bro, haystfu."
Person 1: "Um what?"
"Yeah, bro. She's a total haystuffer. I put pieces of carpet and dog food up her ass"
"Sweet... You wanna kiss?"
"Pucker up, butter cup"
they kiss and have gay sex, with some haystuffing after as a treat
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
Precedes or follows either a gratuitously disrespectful or honest remark, originated in New York City. Used in similar fashion to "no offense" or "to be honest," interchangeably.
Ya mans is wild buns, respectfully. Respectfully he's washed.
After school, The Modells on Jamaica Ave was active. Respectfully.