OMG, I want to print this and staple it to the fabric wall of a woman in my office. If it wasn't for company equality policy I would say something, but how can you tell someone off for being happy? What can I say? It's driving me crazy! I might say 'Sounds like you are having lots of fun! I wish I had no work to do either!!!!'
You can hear her getting worked up from !$%*! away and I don't know why those people talking to her egg her on. I guess everyone likes to be thought funny and her cracking up let's everyone on the floor know (although I don't think it takes much to set her off)!
I identify. One of the managers at my job laughs or giggles after every sentence he says. He laughs or giggles at everything, from good to terrible, as if absolutely everything is funny. From one perspective, this does lighten the workplace atmosphere. But then again, we're all sick of it by now. Needless to say, my co-workers call him "Mr. Giggles" behind his back.