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You need to clean a smudge of your glasses? Use some spit! Gotta make some food moist so you can swallow it? Why not try spit?  Lips too dry to whistle a tune? My friend, spit is the bodily excretion for you! Spit: don't leave home without it!SciShow Tangents is on YouTube! Go to www.youtube.com/scishowtangents to check out this episode with the added bonus of seeing our faces! Head to www.patreon.com/SciShowTangents to find out how you can help support SciShow Tangents, and see all the cool perks you’ll get in return, like bonus episodes and a monthly newsletter!And go to https://store.dftba.com/collections/scishow-tangents to buy your very own, genuine SciShow Tangents sticker!A big thank you to Patreon subscribers Garth Riley and Tom Mosner for helping to make the show possible!Follow us on Twitter @SciShowTangents, where we’ll tweet out topics for upcoming episodes and you can ask the science couch questions! While you're at it, check out the Tangents crew on Twitter: Ceri: @ceriley Sam: @im_sam_schultz Hank: @hankgreen[Trivia Question]Minor salivary glandshttps://www.smithsonianmag.com/smart-news/researchers-may-have-discovered-new-organ-set-salivary-glands-hidden-your-head-180976104/[Fact Off]Bowerbird making “paint” out of salivahttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3996615/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.2005.0908-8857.03549.xhttps://www.sciencedirect.com/science/article/abs/pii/S0003347213001097?via%3Dihubhttps://royalsocietypublishing.org/doi/10.1098/rsbl.2005.0325https://australian.museum/learn/animals/birds/satin-bowerbird/https://australian.museum/learn/animals/birds/satin-bowerbird/Spitting cobras evolved to defend against hominids throwing rockshttps://www.newsweek.com/how-it-feels-acobra-spits-face-revealed-excruciating-detail-1749490https://www.earthtouchnews.com/discoveries/discoveries/spitting-cobras-may-have-evolved-unique-venom-to-defend-from-ancient-humans/https://news.cornell.edu/stories/2021/01/study-did-cobras-first-spit-venom-scare-pre-humans[Ask the Science Couch]Compressing salivary glands aka “gleeking”https://www.ncbi.nlm.nih.gov/books/NBK542272/https://www.health.com/mind-body/what-is-gleekinghttp://www.vivo.colostate.edu/hbooks/pathphys/digestion/pregastric/salivary.html [Butt One More Thing]Dung-spitting competitionshttps://www.huffpost.com/entry/dung-spitting-contest-northern-ireland_n_55ae6aebe4b0a9b9485290c1https://www.ripleys.com/weird-news/bokdrol-spoeg/https://www.sbnation.com/lookit/2014/8/1/5960987/spitting-antelope-poop-is-a-sport-kudu-bokdrol-spoeg