Can we survive without a tongue?
Of course you can; the tongue is not a vital organ required for the successful function of the body. Many persons have had their tongues cut out as punishment for various infractions (e.g. in Byzantium), but lived. As many have noted, eating and speaking become much more difficult without a tongue, but it can be done.
Tongue has one of main senses of our body i.e. taste, if we don't have tongue we won't be able to taste food. We won't be able to chew our food properly swallowing would be difficult as well. Lack of saliva, which helps in hydrating our mouth, if not present then gums will get dry and teeth will fall off.
Surgical resections alone create volumetric muscle loss whereby muscle tissue cannot self-regenerate within the tongue. In these cases, the tongue is reconstructed typically in the form of autologous skin flaps.
Speech. An important function of the tongue is the gift of speech. Through this, we can freely communicate and express ourselves verbally. The effect is caused by the tongue's flexible muscles responsible for the different sounds we speak.
The most common operation to replace a significant portion of the tongue (and the one chosen for Evans) involves using a portion of the patient's forearm to create a flap based on the shape and size of the piece of tongue being removed.
...
They are:
- a, aa.
- u, uu.
- ka, kha, ga, gha, ṅa.
- pa, pha, ba, bha, ma.
Hairy tongue occurs due to lack of stimulation / abrasion to the top of the tongue. The result is a buildup of a protein known as keratin (the same protein that makes up the hair on your head).
Like the outside parts of the nose and the ear but unlike most other organs, the tongue continues to grow at advanced age.
A cut or tear to the tongue can bleed a lot. Small injuries may often heal on their own. If the injury is long or deep, it may need stitches that dissolve over time. If a piece of your tongue was cut off or bitten off, it may have been reattached.
For anyone who speaks in a tongue does not speak to men but to God. Indeed, no one understands him; he utters mysteries with his spirit. But everyone who prophesies speaks to men for their strengthening, encouragement and comfort. He who speaks in a tongue edifies himself, but he who prophesies edifies the church.
Can a tongue be amputated?
Trauma to the tongue. The tongue can suffer a broad type of traumatic injuries, but they can be classified as Partial or complete lingual amputation.
You don't have to use your tongue through the entire make out session. If you want to just kiss without tongue too, it's totally fine. When you ARE using tongue, your go-to move when Frenching can be a massage between your two tongues.

References
- https://www.dana.org/article/speaking-in-tongues-glossolalia-and-stress-reduction/
- https://www.smilemountainview.com/the-role-of-your-tongue/
- https://www.samstorms.org/all-articles/post/tongues:-praying-and-praising-in-the-spirit--1---acts-2:1-8-11b--1-corinthians-14:1-19-
- https://www.britannica.com/topic/glossolalia
- https://www.sun-sentinel.com/news/fl-xpm-2006-10-21-0610190919-story.html
- https://www.blockislandtimes.com/affiliate-post/gift-tongues-part-4-does-every-believer-receive-gift-tonguesare-tongues-evidence
- https://timesofindia.indiatimes.com/readersblog/onyekachijohn-blog/benefits-of-praying-in-other-tongues-34532/
- https://www.samstorms.org/all-articles/post/speaking-in-tongues-and-the-southern-baptist-convention---part-1
- https://worldbuilding.stackexchange.com/questions/146480/which-sounds-could-a-tongueless-person-produce
- https://www.samstorms.org/enjoying-god-blog/post/why--when--and-how-did-the-apostle-paul-speak-in-tongues
- https://www.kcm.org/real-help/prayer/apply/5-benefits-praying-tongues?language_content_entity=en-US
- https://www.babbel.com/en/magazine/speaking-in-tongues-glossolalia/
- https://www.vanguardngr.com/2021/08/praying-in-the-spirit-is-not-praying-in-tongues-part-1/
- https://healthblog.uofmhealth.org/health-management/a-new-tongue-a-new-baby-and-a-new-approach-to-treatment
- https://myhealth.alberta.ca/Health/aftercareinformation/pages/conditions.aspx?hwid=aby3895&
- https://pubmed.ncbi.nlm.nih.gov/11936196/
- https://www.aaom.com/hairy-tongue
- http://web.mit.edu/jywang/www/cef/Bible/NIV/NIV_Bible/1COR+14.html
- https://www.charis.international/en/is-the-gift-of-tongues-for-everyone/
- https://brainly.in/question/3834111
- https://www.teenvogue.com/story/how-to-french-kiss
- https://pubmed.ncbi.nlm.nih.gov/34693743/
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4723719/
- https://www.gadsdentimes.com/story/sports/2008/04/05/seven-reasons-why-every-believer-should-speak-in-tongues/983977007/
- https://www.thehealthyjournal.com/faq/can-a-man-survive-without-tongue
- https://wset.com/news/local/local-churches-practicing-speaking-in-tongues-describe-it-as-a-personal-experience
- https://en.wikipedia.org/wiki/Speaking_in_tongues