Prostituting oneself for the sake of it being an easy way to get cash, when you sleep around for money but dont actually have to
by Oidua November 20, 2006

Boy: Omg that girl is hot!!
Boy2: Naa man, shes part of the flat back gang
Boy: Oh shit... forget i even mentioned her
Boy2: Naa man, shes part of the flat back gang
Boy: Oh shit... forget i even mentioned her
by Courtz_32_ December 19, 2013

"You get a filet mignon from Ruth's Chris steakhouse?"
"Yeah, then I gave the hostess the flat back filet!"
"Yeah, then I gave the hostess the flat back filet!"
by Mercian Male April 11, 2015

by theWestHamfan November 05, 2003

by Kwelityhiphop November 30, 2005

Describes someone so outrageously drunk they end up horizontal—usually on a couch, the floor, or wherever gravity decides they should be. Comes from the image of someone literally being on their back, flat as a pancake, because standing is no longer an option.
by Handle Not Found July 12, 2025

To smugly turn and face the opposing direction of an intended audience while having a full fledged conversation usually when it is business critical
*Three People speaking in a triangular formation; one of them is turned with their back to the other two, while the two are in avid discussion*
Lizzy- "Dick, hey I'm trying to communicate a few critical things that need to happen by the end of your shift"
Dick- "Oh, is that what you call it." Hmph (back turned to Lizzy, facing Barnaby)
Barnaby- "Did it not occur to you: You're flat-backing your boss... dick"
Lizzy- "You are a dick, Dick"
Lizzy- "Dick, hey I'm trying to communicate a few critical things that need to happen by the end of your shift"
Dick- "Oh, is that what you call it." Hmph (back turned to Lizzy, facing Barnaby)
Barnaby- "Did it not occur to you: You're flat-backing your boss... dick"
Lizzy- "You are a dick, Dick"
by BMiller58 December 24, 2022
