Dr. Marcie Bianco writes at Mic.com:
Does getting high make you a little gay? If so, you may just be a “highsexual.” The term, ensconced in Urban Dictionary since 2009, made its way onto two Reddit forums in recent weeks as a way to describe the alleged phenomenon of participating in sex with someone of the same gender or having same-sex fantasies when getting incredibly high. But while perhaps not common parlance, these two threads — “Can LSD make you temporarily gay?” and “Weed makes me temporarily gay. Anyone else?” — are example of a phenomenon that’s been around for awhile. It seems straight guys have wondered about “highsexuality” for a few years, given the plethora of online evidence. Are drugs the key to sexual fluidity in men? Responses in both Reddit threads exhibited an awareness of “highsexuality,” as well as the fact that getting high makes you horny and just might lead to a more unconventional sexual encounter. But they also were encouraging in their acceptance of sexual fluidity.
Hit the link for examples from the Reddit threads.