stands for "good night nigga." usually in a text.
bruh im baked imma sleep out now

'k gnn
by sun-uv-a-bee-atch December 03, 2017
Get a gnn mug for your cat Günter.
An acronym for "got new number" to be used in games concerning numbers.
Guy 1: Let's start again.

Girl: Gnn.

Guy 2: Gnn~
by Typo-chan June 22, 2013
Get a Gnn mug for your dog Bob.