As already answered, you better not try drinking it. This product is not intended to be ingested, by the way - it is usually indicated in some way on the liquid bottle. "Anything" can happen to you without using the contents inside - life is a diverse thing for events. So.
As for the video ... The guys "floated pure nicotine through a vaporizer", really something like 1000 mg / ml, otherwise 100% nicotine. Hmm, approx. But: 1) such a substance is something similar to plasticine - and it is unlikely that it can be poured somewhere. 2) The substance in this concentration is extremely toxic, not available for free sale. 3) Even if they managed to pour it in and evaporate, then the guaranteed result after such actions is almost instant death.
And the answer to the question: In principle, something is unlikely to happen to you ... The liquids that are now on sale are liquids with a rather low concentration of nicotine (from 0 to 1%), and the main ingredients in them are propylene glycol, glycerin, flavors in a propylene glycol solution (occasionally on glycerin).
When using such a product as a drink by an adult, he will most likely feel bitterness on the tongue and in the nasopharynx - nicotine is a rather caustic substance and even in minimal concentration gives some burning sensations. From glycerin, which is a laxative, it can take a little by the evening. Propylene glycol, and its 30 ml, usually about 30%, that is, 9 ml - will not cause any damage. If the liquid was high in nicotine, it is better to drink a couple of glasses of water and induce vomiting, for prevention - in this case, you nothing will happen either.
Anything can happen - from a slight upset stomach to poisoning. Slurry with nicotine is even more dangerous, since nicotine is a carcinogen. Some weirdos with the letter "m" on YouTube floated pure nicotine through a vaporizer, pouring it instead of slurry. This is generally the worst of all. If nicotine droplets penetrate into the mouth and stomach (many electronic vaporizers sin of this), they can cause poisoning. In addition, there are no enzymes in our stomach to digest nicotine. So don't try it.