I once had a glass of 300 IBU IPA a friend made. (The beer looked green coming through the tap lines, and he lost 2 gallons of wort to the hop sludge before fermentation)
After my face returned to normal upon consuming about 6oz of this beer, I in fact, did NOT have a craving for Cheetos or Funions. Also, I did NOT start excessively using the word "Dude!" or demand that everyone hold hands for world peace. I observed a few people who drank several glasses of this hop juice, and NONE of them exhibited the above behavior as well.
Based on this incredibly scientific experiment, I am going to have to reject your friends hypothesis.
And as a skeptic, let me just say that barring my own experiences consuming lots of hoppy beer, that the theory is "too good to be true" anyway. Hops at the retail level are around $1-3 per ounce. If there was ANY high to be had from consuming them, then the home brew shops in this county would have lines of Dead Heads out their doors every day. Your friend needs to use some critical thinking.