A few "dictionary" citations:
http://www.udel.edu/eli/rw4/language/slang2.html has
Props: as in "Give me props." This refers to giving someone a proper
greeting, often involving hand taps of some sort.
http://www.rapdict.org/terms/p has
props
(n) An abbreviation of "propers" or proper respects. A show sits on
physical and non-physical props. At an award ceremony the winner gives
props: "And I would like to thank...".
http://www.geocities.com/online_slang_dictionary/slang/p.html has
props n 1. praise, compliments. One usually "gives" props. Sometimes
prefixed with "mad". ("I'll give Joe props for that crazy stunt.")
http://www.voxcommunications.com/yprops.htm has
Props
To give me "my props" means to give me my proper respect. Usually done
by tapping fists together.
Jonathon Green wrote:
>
> > I would have guessed "my propers" to mean not "proper respects"
> > particularly but rather more generally "those things which are proper to
> > me", i.e., "what I should have" or "what I've got coming to me".
> >
> Point taken, but note:
>
> 1997 _Da Bomb_ (Cal. Poly. Slang Research Project) 22: Props: [...] 2.
> Proper respect. The class gave me much props during the presentation
>
> Whether this is right or not, I cannot say..
>
> Jonathon Green
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