Comedy is a gift. Laughter is said to be the best medicine (except for extreme cases which make the asthmatics suffer). Without humor life will be miserable. While a smile can be contagious, a silent laughter can also be especially when shared using funny tee shirts.
Imagine walking with yours on. People you meet will notice what you are wearing. People whom you do not know may also be able to see your shirt. Oftentimes, shirts with printed messages are read, even secretly. If you do not know the wearer, there is that tendency when you will throw glances on the shirt just to read what it’s saying without actually being noticed. That’s when the silent laughter begins.