The art of trolling is said to test your love bond, so you might wanna pull a practical joke now and then to keep that flame burnin'. And sometimes all it takes is a hefty batch—400, to be precise—of googly eyes. One loving girl in Austria did just that. She ordered a pack of sticky eyes and glued them all around her boyfriend’s apartment.
Have you noticed that sense of fulfillment after you do something real silly, and your significant other just gets it? Like an informal matching test, it instantly indicates you’re on the right track. Moira Smith, an anthropologist at Indiana University Bloomington, has said that jokes and pranks "are designed to show off the strength of the relationship by testing that relationship." Because “you have to know a person pretty well to know their foibles and what is guaranteed to get their goat." That’s why most lovebirds and BFFs tend to laugh at each other like there’s no tomorrow.