1.If you are sexually attracted to someone's grandad
2.If you dont want to use yer mum or yer dad as a comeback
3.If your shit at comebacks
Cool kid: Hi i heard you mum is hot
Gay kid: So is yer grandad
by lauren is the coolest person ever September 24, 2007
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THE WORST OF THE WORST ALL WHOM HAPPEN TO FACE THIS INSULT ARE INSTANTLY EARASED FROM ALL OF HISTORY BE WARY MY CHILDREN BE WARY INDEED
Jim: Yer grandpap a trap
John: Yer great grandad is a banged lad
Jim: G O N E
by Cock boi 911 March 14, 2018
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