"lang lou- heavy tongue Is also use for lisp

You said:
"lang lou- heavy tongue is also use for lisp "

Mandaly says:

Yes thanks :)
Haitians also use 'lang lou' to describe a heavy language accent:
Lang li lou lè l ap pale Kreyòl.

Also they use 'lang lou' to describe someone that's unable to talk because of a strange anxiety or when in the presence of an evil being (people experience that in a dream state or when they're in between being asleep and awake):
Pandan m sou kabann nan, nan fènwa a, mwen santi te gen de zombi nan pye kabann nan. Lang mwen vin lou, m pa t ka pale.
Haitian Creole ↔ English Reference, Look up Haitian Creole and English Words