我一见你就笑你一笑我就硬
[wŏ yī jiàn nĭ jiù xiào nĭ yī xiào wŏ jiù yìng]
This username is rather humorous and playful, expressing a person's strong and immediate physical reaction to someone they find very attractive. Literally it translates to 'I laugh whenever I see you; You smile at me and I get an erection.' While not common in serious or formal settings, it may be used in casual or joking contexts.