As a matter of fact, many of the lesbian-porn consumers are straight male; it seems that two women playing with each other is an obligatory scene in any adult movie targeted to straight males.
Not only that, last time I went to a strip club, many of the girls were making out with each other for the benefit of the male clientele; the same thing happened every time I went to spring break.
It seems that a lot of straight males are bad role models who enjoy watching perverted sex, right?