Two killer whales, Betty and Mary, are swimming around looking for something to do when they spot a ship coming their way.
"Come on," says Mary, "let's have some fun!"
So they swim under the ship and they each let out a massive blast from their blowholes, smashing the ship to pieces.
...
Sitting back looking at their handiwork Betty notices some sailor floating around, "Come on Mary," she says, "let's go and eat the sailors!"
Mary looks at Betty with disgust and says,
"Really Betty I don't mind doing the occasional blow job but I refuse to swallow the seamen!!!!"