A man sits in a bar, reading a newspaper. Suddenly he is tapped on his shoulder by another man: "Excuse me sir, but do you know Mrs. Appleblossom?"
The man folds up his newspaper, coughs slightly and replies: "just a moment sir", after which he takes out a little black notebook. "A, A, A… [finding the name in the book] yes, actually I do know Mrs. Appleblossom.".
He puts the notebook back into his inside pocket picks up the newspaper and continues reading. The other man taps his shoulder again: "Excuse me sir, but have you been to bed with Mrs. Appleblossom?"
The first gent puts the newspaper down again, finds his notebook and checks: "B, B, B… ahh, yes, I have been to bed with Mrs. Appleblossom"
He starts putting the notebook away when he once again is tapped on the shoulder: "Excuse me sir, but I am Mr. Appleblossom, and I am very disappointed"
"D, D, D… ahh… yes sir, so was I!"