Is it normal to be turned on by seeing a girl's saliva in her mouth?

Ok, I'm probably about the only one that has this fetish, but I absolutely love looking at a girl's mouth while she yawns, talks or laughs in the hope of catching a glimpse of seeing a string or strings of saliva, usually attached from the bottom lip to her front teeth, or from the tongue to the roof of her mouth. I don't mean drooling or spitting. I even search on Google images for high-resolution close-ups of women's faces just to satisfy this desire. I especially like when I find a picture of a celebrity's saliva, such as Taylor Swift, Britney Spears, or Angelina Jolie. I was just wondering if this is "normal" like having a shoe fetish for instance, or if I'm totally bonkers.