by Quivering_Quill
There is only one "humanity" as far as I know so it should be "humanity's", a possessive.
You might google "possessives rules" to re-familiarise yourself
The word humanities refers to the study of different social sciences as in academic categories i.e. history, philosophy, political science etc.
Oh yes, the licking of one and another's sexual organs is common in most species for sanitary and as pre-coitus behavior
Once again I am honored that both you have taken time to read and provide comment on my submissions... Greatly appreciated!
but I like your romantic approach to what can be in truth a very animalistic act