1 definition by LanaDangerZone

Top Definition
When a member of the opposite sex (or same sex) declares you to be "brother/sister", thereby ruining all potential chances of sex.
Guy: Would you like to go out with me?
Girl: I'm sorry, but you're like a brother to me.

Sibling-zoned!
by LanaDangerZone March 31, 2012

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