You can not speak ancient Egyptian. First of all, this language has been dead for some 1500 years already. Secondly, the Ancient Egyptians did not write any vowels, just consonants, so we do not know what their language sounded like. In addition, their language is bound to have evolved a lot in its more than 3000 year long recorded history. It is unlikely that an Egyptian from 3000 BC would have understood an Egyptian from 300 BC. There are also bound to have been regional differences in the pronunciation, a bit like dialects. An ancient Egyptian living in Memphis might have had a hard time trying to talk to someone coming from Elephantine.