Advice from the animal kingdom

Yes, even at our most well-behaved, we’re still animals — human animals, but animals nonetheless. As a result, the same rules that apply to the larger animal kingdom sometimes apply to us. Lionel Tiger, an anthropology professor who has done a lot of work on animal behavior, reports that, to show that their intentions are honorable, animals bare their necks, the most vulnerable part of any animal’s body. Where do you think we got the phrase “Go for the jugular (vein)”? And you thought it came from a Dracula movie. Therefore, the best way to show how honorable your intentions are is to bare your neck metaphorically:
In other words, to get a phone number, offer your own.