What does the snake smiles but shows no teeth mean?
Its a warning to beware of deception; those who invite with a smile (and appearing friendly) but dont reveal their true nature.
there is a variation which simply says "show no teeth" as in give nothing away, not a snarl nor a smile.
Is there a difference if a guy smiles with his teeth showing at you or if he just smiles with his mouth closed does one mean he likes you and the other way means he doesnt?
cobras do not have teeth they have fangs (sometimes they are poisonous) *facepalm* ALL snakes have teeth, some have teeth AND fangs. NO snake has just fangs. And ALL cobras are venomous (you do not mean poisonous)! They are all Elapids (i.e. they are proteroglyphous). There's also opisthoglyphous (rear-fanged). This fits many Colubrids, such as the Boomslang, the Parrot snake, the Lyre snake, and MANY more. And there's solenoglyphous (vipers' delivery system) as well as…
What does it mean when she rolls her eyes smiles and walks away when you try to discuss your feelings?
IF you mean how do you remove the venom from a snake - you CAN'T ! The venom is manufactured in the snake's body, and stored in venom sacs. The venom usually begins the digestion process and the snake NEEDS it. Removing the venom sacs (and fangs) of venomous snakes is equivalent to a surgeon removing your teeth and stomach !
It depends what you mean by 'tree snake' ! If you're talking about the Green Tree Python, personally - I wouldn't recommend them. They have exceptionally long teeth (their primary prey is birds - so their teeth need to be long enough able to penetrate a layer of feathers). They are also one of the more aggressive species !