Any thread containing Yuri or being its main focus, will eventually fall into NTR and cuckoldry territory as it is a representation of their fandom's inner desires.
Chad: I think Yuri is pretty cool. cute girls are meant to be with each other.
Mike: Actually, NTR'ing a girl from a guy is the purest thing ever though, because then the "stolen" girl would be purified from filthy male hands.
Chad: there it is, Yuri's Law in action.