$('.element').waypoint(function(direction){
    if(direction == 'down'){
        $(this).addClass('active');
    }else{
        $(this).removeClass('active');
    }
},{offset:'100%'});

.sticky-container.active .stick-me {
    position:relative;
}

.sticky-container .stick-me {
    background: blue;
    height: 50px;
    position:fixed;
    bottom:0;
}

.content {
    height: 1000px;
}