methamphetamumbles 

The act of talking so fast while high on meth that people cannot understand each word cuz they all run together

I'll tell you what my tweaker buddy Bill sure did talk fast he's got methamphetamumbles for sure......

methamphetamumbles by LemmeF1ndOut March 5, 2020

methamphetamumble 

condition a person is suffering from when he or she has been up on meth for too many days and is unable to say anything that makes any sense to anyone; inability to put together a full sentence without stuttering, sputtering and mumbling to oneself due to being up too many day on meth; failure to complete full words and put together any intelligent or decipherable sentence or thought after being awake for several days on meth.

after listening for awhile, I decided that John was suffering from methamphetamumble. He kept stumbling and sputtering trying to put together a sentence.

methamphetamumble by driscollsgal June 18, 2010