I keep on comin\'back for more yo

I keep on comin\'back for more yo
I keep on comin\'back for more yo

I keep on comin\'back for more yo
yo 感叹词,
这里有"嘿!嗨!唷!"的意思,表示警告,提醒.
comin' back=coming back
I keep on comin' back for more yo.
嘿!我会回来(管你)要更多的...!
嘿!我将来还会要的更多!
嘿!(你等着,) 我跟你还没完呢!
...

也就是
I keep on coming back for more, yo.
我坚持回来，为了取得更多，yo是语音词。
comin' 是coming的缩写式，极不正式，一般不建议用（slang）

I keep on comin\'back for more yo的意思是：我在comin保持\‘后面为更多yo