Oh, why? I'm going to make more drunk inhabitants of countries. Will it be racist?
It's just that it's a stereotype of the 'lazy mexican' (having a siesta with a sombrero pulled over his head, bottle of liquor in his hand). I'm sure it wasn't meant to be offensive, but it's there. It's like if I drew a picture of, say, a Native American passed out drunk and wearing a headdress.
Seems racist to me.