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4. Grandad
Pervy old man who taps girls on the ass.
me: omg here comes grandad
you: oh fuck.
grandad: hi baby *tap tap*
1. grandad
where somone hits someone else in the area above the kneecap on the side of the left leg with their own knee. why? because its bloody funny (only if it works)!! the consequense of this will be the other person hopping on one leg shouting swear words,while u and ur m8s r laghing like hell. also some advice: always give a grandad when the other person is noot expecting and make sure u r standing up when doing it. there are adaptions of the grandad like a 'running grandad', the 'spinny' and a 'flying grandad'.
'oi m8 i think u'v got a grandad'!!!!!
by Mikey Nov 8, 2004 add a video
2. grandad
A older gentleman. Often a postman called Kevin
Kevin you are such a grandad
3. grandad
An exclamation guaranteed to cause confusion and possible upset, particularly when used during coitus.
Man: "Oh yeah baby.....Mmm hmmm..."

Woman: "Oh yeah, oh yeah, oh yeah...."

Man: "Uh, uh, uh, uh...oh yeah....oh fuck...I'm gonna...I'm gonna...GRANDAD!!!!"

Woman: "WHAT THE FUCK IS WRONG WITH YOU?!?! Get off of me and get the fuck out of my house you sick freak!!"
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