1 definition by Married To The Mob

A term used to reject an invitation or disagree with a comment you just made. Similar to "ya right".
Example #1:
Girl: Hey, wanna come over tonight?
Guy: Is your brother gonna be home?
Girl: Yeah, can you make it?
Guy: DAY!!

Example #2:
Guy: Yo look at that girl she's so hot!
Guy #2: DAY! Her hair looks like a mop!
by Married To The Mob February 5, 2010
Get the Day mug.