Explanation: The Mexican and Italian flags are very similar, save that Mexico has a cool elaborate crest with an eagle (eating a snake, I think) in the middle.

The joke made is that in the Battle of Teutoberg Forest, the Romans lost three Legions and their accompanying legionary eagle standards (aquilae) to a German ambush, thus, the reason the Italian flag lacks an eagle is because they ‘lost’ their’s.

Wait til ya see Chad and Romania’s flags.