Courtesy Cards Without Much Courtesy

We have all bit our tongues at one point or another whether it be each time your obnoxious neighbor seems to sneak a peek into your blouse, or when your old classmate feels the need to boast his high salary once again, or perhaps when your chatty co-worker who never let's you finish your work comes over to tell you about her weekend. Wouldn't it be easier if you could just slip them a card with your sentiments and just sneak away?