grandad

A older gentleman. Often a postman called Kevin

An exclamation guaranteed to cause confusion and possible upset, particularly when used during coitus.

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'.

When you absolutely plough the shit out of the side of someone's thigh with your knee, hence named because they will be walking like a grandad for the rest of the day.

you knee some innocent sole in the thigh
it hurts
and afterwards they walk like a grandad.
this is the concept we all know and love.

When you hand a printed dick pic to a woman.

Pervy old man who taps girls on the ass.