ok was gner show u sumut xx ,

Oh OK,I was going to show you something extra.
哦好吧,我刚想给你看点额外的东西呢.
I(我)因为口语中发音特别快所以没写出来.
gner = gonna 是going to的口语形式.
u = you 你.
sumut = something 纯粹按口语发音拼写的,还带着口音,并且把后面的thing还省略得只剩t了.
xx = extra 这个不是口语,而是借用了衣服大小号码的表达方式：XXL = extra large,所以xx = extra.
写这句的人显然很有创造性.你是哪儿看来的?