With so many great answers, I thought I would toss one more into the mix. This one, unlike the others, would permit you to cycle through any number of messages with ease:
var index = 0,
messg = [
"PUSH ME",
"DON'T PUSH ME",
"I'M SO CONFUSED!"
];
$(".pushme").on("click", function() {
$(this).text(function(index, text){
index = $.inArray(text, messg);
return messg[++index % messg.length];
});
}??????????????????????????????????????????????);?