When someone is either exclusively or predominantly attracted to hispanic people
Girl: Do you think I have a chance with him? He looks pretty out of my league but he seemed to be flirting with me last night?
Guy: Yea, I think he has Sombrero Fever, he only has sex with hot spanish girls, he says it's because he's more of an ass guy?
Girl: Oh shit that explains it! I think I'm gonna go for it!
An intense love of mexican people, culture, and food.
Sarah has serious sombrero fever; she only dates mexican boys.
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