Lots of people don't like bugs, but I've never heard someone describe a bug as "mean" in the sense that "mean" is describing the appearance of these pickup trucks.
I guess you could say "big mean bug," but that's because "big mean" is a separate idiom in US English for "nasty looking." But we're talking about an aggressive aesthetic, which is both separate from nastiness and purely human in origin (unlike a bug that provokes a disgust reaction in someone).
I guess you could say "big mean bug," but that's because "big mean" is a separate idiom in US English for "nasty looking." But we're talking about an aggressive aesthetic, which is both separate from nastiness and purely human in origin (unlike a bug that provokes a disgust reaction in someone).