The ability to keep a straight face

Is not so good when one of the members of your party decides to ask the waitress what a blowjob is (one of the drinks on the menu). I lasted about 15 seconds before losing my composure, but my back was towards the waitress for a reason, allowing the questioning to continue. “Okay, I understand what the drink is, but what does the word mean” The sheepish waitress finally had to concede, “you should look it up online at home, I can’t tell you here.”