Are there any fics that deal with Sam or Dean having to teach John about Gay sex (Or anything kinky) for whatever reason? It might be for a ritual, or John decides to be experimental with himself and/or others. Maybe John just is too curious for his own good about what his boys do in bed with each other, or other men. 

Wincest is generally my preference, but any pairing is acceptable, as are self recs. 

Thanks!