1. (adjective) of or having the qualities of being proverbially or metaphorically unclean;vulgar
2. (adjective) used to intensify a word, sentence, paragraph, page, chapter, book, or phrase 1,000,000,000,000 times over or to a Master Pimp level.
Def 1. "Dude, I totally pulled a Uri all over your mom last night! Dirdely!!"
Def 2. Guy 1: "Bro, how'd it go last night with that chick?"
Guy 2: "I fucked the SHIT out of her, MAN!.... LIKE I FUCKED YOUR MOM!!!! Dirdely!!!!