Flat Jack 

A Flat Jack is a square of breaded processed chicken that can be heated up in a toaster instead of an oven, making it a quick and convenient lunch option or snack food.
It's like a chicken nugget that is the size and shape of a Pop-Tart.

Hey man, I'm hungry, but I dont want to heat up the oven or turn on the stove for something small. What do I do?

Oh, no problem. Stick a couple Flat Jacks in the toaster and you're good to go dude.

Thanks brah

Flat Jack by Anon7301 May 7, 2011

flat jackson 

A knee-legnth penis, hanging low to the right, with short pubic hair.

Man, I can't believe that guy has a flat jackson!

flat jackson by mrbill4 December 2, 2018

flatjack 

Same as a HillJack but they live in flatlands. They’re rednecks who live in cities and rural flat areas.

He’s not a true hillbilly or even a HillJack. He’s a hillBilly wannabe, he’s a FlatJack.,

flatjack by BaiCon September 7, 2021