To all the people who say this is just people trolling saying "You ain't got no pancake mix" haven't seen the video or saw Ray William Johnson version.
If you watch the original video you would know that The guy who started the "You ain't got no pancake mix" joke or as we call him "The pancake mix one" said those jokes to a lady who was a preacher of God that said everyone will go to hell. So then "The pancake mix one" came along and told the lady "You ain't got no pancake mix!".
What does "You ain't got no pancake mix mean?" It's a code that means if you tell people their're going to hell, then you simply Have no pancake mix.