Oh for sure 

A term that kids use sarcastically when talking

Me: "Wow you did a great job, Nathan!"
Nathan: "Oh for sure"

Oh for sure by gombardi September 6, 2017

oh yeah man for sure 

a phrase you say when you are not interested at all in what a person is saying to you but you want to make it seem like you're listening

Person 1: "dude isn't (some random bullshit) crazy?!"
Person 2: "oh yeah man for sure"

oh yeah man for sure by Owkfnrow October 23, 2019