Local to the West Coast of Scotland (especially Glasgow) & having been used since the late 1960's/early 1970's to describe in slang terms, the act of head butting another individual (see also Malky)
I'm led to believe that it's also been used in printed stories & rhymes, again locally in the Glasgow/West of scotland area, by the likes of the Glaswegian poet & wordsmith, Liz Lochhead, (who was invited to read some of her work to my schools drama classes, during the school year 1981 - 82).
"...Ho, see that dobber over there that's lookin at me oot the corner o his eye, he's gettin a dose o the malkies afff a me, if he doesn'y gee it a by."
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.