When you want someone to shut their whore mouth so you want to insert your big toe in their mouth to shut them up, but that wouldn't be publicly appropriate so you say "suck a toe" instead.
Erin: Hey guys, wanna hear a story!?
Everyone: SUCK A TOE!
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.