A shayari is a Hindi poem that incorporates the use of Urdu couplets. It tells a story, reveals a personal emotion or philosophy, and makes you think. It can be in any language, but it is most popular in Hindi and Urdu.
When two lovers exchange shayaris, they do it using the language of love. Shayaris can be sad or happy. They can be funny and sarcastic or philosophical. Some make you laugh, some make you cry and some inspire you. They are often used for entertainment purposes.