我们总是肆无忌惮
[wŏ men zŏng shì sì wú jì dàn]
It means 'We Are Always Rash and Uninhibited', reflecting the users' unrestrained character or attitude of not being restricted or limited. In another angle, this also reveals boldness and daring spirit sometimes bordering recklessness. This is often linked to youth and the carefree years.