You should really check out the porn site Boys Halfway House. The theme for each photo session is always about a young boy who for some reason is taught a lesson by an older man. Most of the time there is an element of domination as the young guy is supposed to have done something wrong and needs to have some rough sex. The young porn stars are mostly supposed to be straight boys, however these young men seems to like to have sex with a dominant ”teacher”. Read more about the background story for each case, and you will get into the game quite fast. 
Gay porn video from Boys Halfway House:
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