Top definition
A nicer way of saying Silly Bastard, can be used around Parents, Grandparents, aunts, uncles, teachers, pets in all situations.

You name it this word can be used around it! :)
Have you seen what Jimmy has done to his hair?!?

He looks a bit of a Billy Sastard to me...
by Squeekyleeky June 29, 2009
Get the mug
Get a Billy Sastard mug for your brother G√ľnter.