Kids laughed happily at clown.

Meaning: The children were very amused by the clown and laughed with joy.

Choice of Words: Kids are young people, usually children. Laughed means to make a sound expressing amusement or joy. Happily means in a joyful or contented manner. At means indicating a position or direction. Clown is a person who makes people laugh, usually by wearing a colorful costume and performing silly acts.