Dialect in Chongqing and Huaihua
lan gou in Chongqingese should be:


  啷个
  lang3 go4
  [Ĩaŋ⁴¹ ko²¹³]
  (代) 怎么  


or with er-hua:


  啷个儿
  lang3 ger4
  [Ĩaŋ⁴¹ kər²¹³]
  (代) 怎么  


the second one lei si should be:


  勒是
  le2 si4
  [Ĩe²¹ sɿ²¹³]
  (代) 这是。


Here's Bridge saying 勒是雾都, Chongqingese for 这是重庆:


  




In Sichuanese and Chongqingese me is more likely to be 没 or 莫, but Hunan might be a whole other tiger all together.

最土、最闷骚的方言：怀化话 does say this though:


  毛晓得------------------- 不知道