All day Err day 

24/7, always open, all day everyday, never closed,

Do you guys smoke?

Yeah, all day err day.

All day Err day by espo23 February 22, 2017

all day err day 

A phrase that is used to make it seem like you do something impressive, when in reality you've never gone near it.

Person 1: Do you even lift?
Person 2: Yeah man. All day err day!

all day err day by MightyShizzle November 10, 2013

all day err day 

A deformation of "all day every day", meaning something happens very often.

Person A: You busy?
Person B: Hell yeah! Hussle all day err day.

all day err day by Tatsuman December 22, 2016