In the end, Kutner gets away with everything.
He wears jeans and stripy jumpers to work and looks worried and rather helpless when Cuddy tries to kindly remind him that he should really try to look more professional.
He drinks coca-cola with a straw while the rest of them have coffee, than then drinks coffee while everyone else has smoothies. He eats humbugs while doing labwork and has cold spaghetti for breakfast.
He sleeps against a wall, like a horse, while Thirteen and Taub take a history, but wakes up approximately five seconds before the patient codes. Taub fails to revive the woman. Kutner takes the paddles from him and brings the patient back on his first haphazard try.
At Christmas, Kutner wears a Santa hat all day long. He also gives House a ridiculously expensive watch. House winds it up, just to see if it actually works or if it's cunningly disguised charity-shop junk, and chokes on his coffee when the second hand starts to tick backwards. Kutner himself wears a watch which has the numbers shown as square roots, with the primes in red.
Kutner doesn't even bother to lie about what he thinks, or think before he speaks; he seems to blurt out ideas as soon as they are half-formed, yet somehow nobody is offended by his forthright views, and he hardly ever says things are actually stupid. And just when they think he's completely lost the plot, he solves all their problems in a House-like stroke of genius.
Taub asks Kutner slightly incredulously how he gets away with it. Kutner blinks. "Get away with what?"