Saliva can be used as lubricant, for example a woman can spit on her fingers to lubricate her vagina. It should be renewed more often than a real lubricant since it gets dry faster. Lubricating correctly a pussy can prevent breaking a condom, even if the condom comes lubricated.
If the woman / man is not your official (monogamous) partner, it is safer to use your own saliva to lubricate your pussy or cock that is not protected with a condom, since there is a small risk of STI.
If you are not with your official partner, French kiss / deep kiss with exchange of saliva should be avoided, as well a unprotected blowjob or pussy licking, which also adds a risk of STI.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

the semen of ghosts that is constantly ejaculated into all of our mouths

woman juice used to lube the cock for head

Spit/spittle/drool/slobber Not to be confused with salvia, a psychoactive drug.

A kick ass band. They made songs like Click click boom and Lackluster. They are probably the best nu-metal band out there.

The best band. Ever.