Second is the name. To perform coitus sounds awfully familiar to something my grandfather would include in a story about getting an enema. Sex also cheapens a relationship. I have drawn out a scenario to persuade non-believers that still believe that sex is a manifestation of love. Partner A is set on more grinding and sweating while Partner B would rather catch up with old friends at dinner.
Dismal times follow.
B finds it hard to talk to A because A always has that aggressive look in his or her eyes. B announces nonchalantly that he is exhausted and has a paper to write, so A knows that it isn't tonight. The relationship then collapses. Eroticism is the teasing, sex is the disappointing second act. When these areas are fiddled with, humans are led to all sorts of indecencies as he forgets the wonderful logic he is learning in his MAP classes.