The sudden and momentary loss of memory caused by an excess of marijuana. Usually short-term, but with long-term pot use, create huge holes in the memory.
He: I was sayin', man... what was I sayin'?
She: You were sayin' something about this chronic, man.
He: I don't remember. I must've hit a pot hole.
when someone is talking a load of crap that doesn't make any sense, you can ask them to shut their pot-hole, to get them to shut the f up. ex: "shut your face / pot-hole"