Humans are weird: mistletoe
Okay please don’t ask me why i got this idea in mid july.
What if it were december and a human puts a mistletoe somewhere.
The aliens would see that everytime two of the humans stand under it, they would kiss.
Of course it would confuse them.
But what if one of the aliens gets the idea that the human body is reacting to the mistletoe making us kiss others when we get near it? What if it was like a disease?
Then one of the humans is kissing one of the aliens and it is freaking out because it got the disease and doesn’t wanna die.
Then there is human steve who just gives hershey kisses.
And don’t even get me started on “missile toes”