The characters are caught in a furtive moment without lube which, in the chronology of the film, might have been simply K-Y Jelly , but they cannot hold back their desire. Here, the act of using saliva as lube represents both passion and primality. These cowboys have given themselves over to the heat of the moment, and their own bodily fluid lubricates the gears of their desire. Yes, there's a romanticization of spit fucking in the gay community which probably far precedes Brokeback Mountain.
We observed a similar pattern when evaluating determinants of saliva use as a lubricant in receptive penile—anal intercourse Table 3. Neither age nor income was significant at conventional levels of statistical significance. Use of Saliva as a Lubricant Despite Otherwise Safe Sex Practices To assess saliva use among MSM who were otherwise practicing safe sex by conventional guidelines, we evaluated the participants who avoided unprotected penile—anal intercourse in the prior 6 months. Because each of these organisms is, in part, considered to be sexually transmitted, much of the focus of their transmission-related investigation in MSM has been on conventional means of sexual contact. However, a common thread between these 3 pathogens is their presence in saliva, and, remarkably, saliva is not often considered as a conduit for sexual transmission. This is consistent with another report which showed less frequent use of saliva as a lubricant in anal sex by HIV-uninfected men when with HIV-infected partners compared with all other partners.