I assign idiot chavs who think it's so funny to run up behind you and throw jam at you so you have it on your coat and scarf and it's in your hair. However, the feeling that comes from turning around and hitting the chav with the corner of your sledge very, very hard in the shins and erm, shall we say vulnerable bits, is worthy of the Shire
Even so, trying to get the jam out was a painful process for my poor head.