The lesbian sex that is shown off in
porn for the
run of the mill straight guys is a bit... showy. All of them (from videos to magazines) are so
femme. Just bring some porno actresses, and have them do to each other as if they're doing a man. The women are there to be
exhibitionists for what straight guys think is sex between women. It's the same
rationale of associating
gay men with
anal sex and
lesbians with
cunnilingus. Whatever they
can do with each other,
breeder folks like myself will never know (unless any of us are
bisexual).
Joe Schmo with the VCR (or DVD player) remote does not feel threatened by seeing another well-hung guy onscreen. It's like the "lesbians" are screwing each other just for him.
Or I can say that guys will think "Oh yeah, they'll screw everything that moves" when they see a porno actress or any other women who had sex.