Everybody has fallen victim to the mortifying mistake of pressing the send button at the wrong time, or getting their contacts in a muddle and sending a text message to - oops! - the wrong person. Such sloppy finger work can lead to severe embarrassment, getting caught, or worse still, getting fired. Whether caused by drunkenness, stupidity, or lost in a wave of passion, these easy-to-make mistakes make for hilarious reading material.