When straight women hook up with other straight women, no real explanation is required when straight men hook up with other straight men, it’s a different story. When heterosexual men hook up with each other, on the other hand, it’s seen either as an act born of desperation - think men who are locked up - or an indication that while they may claim to be straight, they really aren’t - think disgraced GOP members of Congress. When heterosexual women make out with one another at a bar or party, it’s generally understood that they’re simply playing around for attention, or exploring the fluid space that is female sexuality. There’s a pretty clear gender divide in how Americans deal with straight people who dabble in gay activity. Michael Cera and Jonah Hill share a bromantic moment in Superbad.