i actually prefer it with one headlight. two things - it sets the bike apart and more importantly, it helps (maybe just a bit) in getting cars to notice you - and therefore not kill you. if a car sees my bike and says, "whoa, his headlight's out", there's less chance they'll swerve into my lane without looking.
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and thinks it's really funny when her nose goes bloody
'cause the blow is so yummy and it keeps her tummy empty
and makes her act more friendly