when your nutted down your siblings throat and they are about to tell your parents you throw your sibling.
I nutted down George’s throat so he went to tell Mum so I threw him. (It was National Throw Your Sibling Day after all).
by thebear06__ November 1, 2019
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Its national throw your sibling day let your sibling throw you across the room and you do the same!
Boy: Hey its October 3 you know what that means.

Sister: No?

Brother: Its National Throw Your Sibling Day! GET OVER HERE!
by Exivity October 1, 2021
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October 4th is National Throw Your Shortesd Sibling Day. If your shortest sibling really pissed you off today (like mine) you can now celebrate a national day and show them whos boss
come here jimmy, today is national throw your shortest sibling day!
by dinos_r_kool October 4, 2022
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