[We, the Space Brothers, endorse this advertisement. Insipid as it may be.]

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----- ADVERTISEMENT
----- Space Brothers Inc. 
----- "Gravity Repulsion And Vastening Ylem" (GRAVY)
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The Space Brothers admonish thee all, Aboriginal Earth Beings: 

BUY GRAVY!  EAT GRAVY!  DRINK GRAVY!
  
FILL YOUR SWIMMING POOLS WITH GRAVY!

IMPROVE YOUR COMPLEXION WITH GRAVY PACKS!

GRAVY COMBATS DANDRUFF AND ATHLETES FOOT!

GRAVY GIVES YOU SLACK(tm)!

REMOVES THE NASTY AFTERTASTE OF BUDWEISER!

REVERSES THE POLLUTION OF OUR BODILY FLUIDS!

CURES BALDNESS!  CURES ACNE!  CURES IMPOTENCE!
CURES STUPIDITY!  CURES THE ENERGY CRISIS!
CURES GEORGE W. BUSH! (Well, we're reaching, here.)

Suggested marketing slogans...

Kill vermin and noxious weeds in a biodegradable, economical
and asthetically pleasing manner!

The brown stuff that DOESN'T smell bad.

Smear it on the windshields of Black Helicopters and Limos and 
MIB sunglasses!

Promotes Intestinal Fortitude!

Makes your engine run smoother and more fuel efficient!

Elvis sez:  "Eat GRAVY and you, too, can be a Perfect Being."

(or: Gray-V -- Gray Vanquishing something?)

(Has nano-bots in it that increase lifespan, intelligence, make your
turds firmer, etc.  Self-replicating:  just buy the culture and voila!
you are a GRAVY supplier!)