Edit in JSFiddle

var nqw_answers = [
    "My fortune teller advised against it.",
    "Sorry, but I can't do anything for the next few hours. I am allowing my food to digest.",
    "I am currently working on my bucket list.",
    "The Queen is coming over tonight for some tea and crumpets."
    ];

$('#nqw_go').click(function() {
    if( $('#nqw_question').val().length ) {
        nqw_chosen = $('#nqw_question').val().length % nqw_answers.length;
        nqw_output = nqw_answers[nqw_chosen];
    } else {
        nqw_output = "Please ask a question.";
    }
        
    $('#nqw_response').html(nqw_output);
    $('#nqw_response').fadeIn("slow");
});

$( "#nqw_excuse form" ).submit(function( event ) {
    $( "#nqw_go" ).trigger( "click" );
    event.preventDefault();
});

<div id="nqw_excuse">
    <div class="nqw_introWords">What's the problem?</div>
    <form><input type="text" id="nqw_question" placeholder="e.g. I forgot my homework" /> <input type="button" value="go" id="nqw_go" /></form>
    <div id="nqw_response"></div>
</div>

#nqw_excuse {
    width: 360px;
    height: 260px;
    background: url(http://lorempixel.com/output/nightlife-q-c-400-300-5.jpg);
    padding: 20px;
}
.nqw_introWords {
    color: #000;
    font-family: Arial, Helvetica;
    font-weight: bold;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 5px;
}
#nqw_question {
    width: 250px;
}
#nqw_excuse form {
    margin-top: 10px;
    margin-bottom: 30px;
}
#nqw_response {
    font-size: 22px;
    display: none;
    position: relative;
    width: 210px;
    padding: 0px;
    background: #FFFFFF;
    -webkit-border-radius: 10px;
    -moz-border-radius: 10px;
    border-radius: 10px;
    padding: 10px 15px;
    min-height: 70px
}

#nqw_response:after {
    content: '';
    position: absolute;
    border-style: solid;
    border-width: 15px 0 15px 15px;
    border-color: transparent #FFFFFF;
    display: block;
    width: 0;
    z-index: 1;
    right: -15px;
    top: 30px;
}