All this said, I'd say that it's not the sexual orientation difference that results in gay men having more sex than straight men, it's the corresponding partners that affect this.
In very general terms:
- Straight men have sex with women. Women view sex *differently* than men.
- Gay men have sex with other men. Men view sex *similarly* to other men.
So the line from Vince Vaughn is humorous in that it has a ring of truth -- not that gay sex is ubiquitously available, but that the partner's agendas are the same, if that's at all clear.
In very general terms:
- Straight men have sex with women. Women view sex *differently* than men.
- Gay men have sex with other men. Men view sex *similarly* to other men.
So the line from Vince Vaughn is humorous in that it has a ring of truth -- not that gay sex is ubiquitously available, but that the partner's agendas are the same, if that's at all clear.