Because =coz , please =plz. Laughing my ass off =lmao.Talk to u later =ttyl . Oh my god =OMG . As soon as possible =ASAP .还要吗Good morning/night G'morning .G'nightBe back soon =bbs . You =u . And =n问下ur是什么意思yourThx这又是一个thx=thanks再请教一下，lel是什么意思是lol 吗？laugh exceptionally loud就是笑的很大声