an expression basically saying to "calm down" but in a more jokingly insulting manner, including the phrase "your mom". If someone says something really dramatically, that you can say "your mom" to, you can basically say "calm your mom".
Girl: "OMG that spider is UGLY."
Me: "Dude, CALM YOUR MOM."
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.