When someone, usually another dude, checks out your girl then gives you props or respect by nodding their head.
Guy 1: Yo Ray Ray, you seen that dude sweatin' my girl?
Guy 2: It's a'ight B... he gave you the prop nod.
Guy 2: It's a'ight B... he gave you the prop nod.
by Lil' Don December 31, 2007