The baby food jar sounds like an urban legend based on racism, implying that African are stupid enough that:
a) they are illiterate
b) they think a food jar is packed with a human baby.
a) I wouldn't be surprised if this is true. The education system prob isn't that great in most(maybe all) African countries. Although, I'm not sure many illiterate peasants* would buy canned baby food.

b)You probably have a point, although didn't someone post a article about rumors of 'killer cell phone numbers' in Africa?

*peasant, subsitence farmer, same thing.