When the guy gave me the love letter I asked him how long he had had a crush on me. He just gave me a goofy smile. I can tell that he is a shy person.
goofy smilegoofy smile 是傻笑的最貼切的翻譯，goofy 就是形容傻傻的意思
I tried to explain how the software works to my dad, but he is slow on the uptae.