True Blonde!

[StreetEndBoy]

A chap sees a lovely looking blonde girl in a bar. He goes over and chats to her. They get on very well and at the end of the evening he asks if he can take her home she agrees. They go up to her room where things progress very nicely. He asks if she is a true blonde, yes she replies, then why is your muff black he says. She says,you know when you hit your thumb with a hammer, yes he says, your thumb goes black, yes he replies, well this has had plenty of hammer!!