I made this movie for a national movie contest in Austria called M&M's Golden Yellow Movie Award. The winner gets 1000 Euro!
Feel free to vote for it here, I'd really appreciate it (oddly, you can vote for it once a day): http://bit.ly/q8sfpo
He says "Ist doch nur Schokolade" ("It's just chocolate")
In order to understand this stupid kinda twist you have to know that in the original movie "Psycho" they did indeed use chocolate as fake blood, because it looked very authentic in black and white.