Oscars Pizza Guy -- They Greased the Pizza But NOT My Hand

The guy who delivered pizzas to the Oscars had no idea Ellen collected hundreds of bucks earmarked for his tip.

Edgar was all business after the ceremony when we caught up with him as he went inside Big Mama's & Papa's ... but it's pretty clear he had no idea Ellen passed Pharrell's hat around and scored around $300. When you deduct $75 for the 3 pies, it leaves an awesome tip.

But Edgar was mum ... somehow learning how to give photogs the brush-off with NO experience.