A hybrid of asking someone, What's up? and also What are your plans for tonight? Example: What d'y'say? Oh, nothing much really, just gonna go fill out that application. Wanna go see a movie afterwards or something?
WHAT D'Y'SAY?
Meaning of WHAT D'Y'SAY? in English
Slang English vocab. Английский сленговый словарь. 2012