look up any word, like smh:
 
1.
A response to a bold statement, accusation, or action; slang for "you're going to wish you hadn't said/done that," or "bitch you'll pay for that."
"Yo momma's so fat, I poked her in the belly and gravy came out."

"Oh no you DI'INT!"
by Seth Livingston June 29, 2005
 
2.
um...oh no you didnt
"i just saw jack"
"oh no you di'int"
by merja October 04, 2003