A man walks into a bar and slips on a big pile of shit all the way up to the bar. The bar man says "Sorry pal, I've been trying to clean that up all week but it won't budge, what 'll it be?" The man orders his drink and thinks nothing of his misfortune.
A second man walks into the bar and again, slips on the pile of shit, skidding up to the bar. The first man casually looks at him and says "I did that five minutes ago."
So the second man turns round and punches his lights out.
