A layered way of telling someone to remove themselves from your presence, especially if they are in your personal space
Francine: hey Matthew, want to have a long conversation about that thing I'm really interested in but you just don't give a damn about?
Matthew: get out of my swamp, Francine
By Sara-Ann
Get Out Of My Swamp
it means that you should get out of shrecks fucking swamp before he rapesyou dog