This is a good way to let your lady know that you've been thoroughly satisfied without having to go into too much detail. She'll quickly learn that the Adorable Whale is the symbol of a job well done. Call her "Baby." Call her "Ishmael." Call her whatever you like. When you flash her the Adorable Whale, she'll know that the mission is accomplished and now it is time to go to bed, because you're tired, and those texts aren't unlimited.