[prawn]

Maybe it's an affectionate way of saying boozehound, as you might needle a friend.

[Curmudgel]

It's pretty clear from the smiley in the title that he was just teasing her. I just found it odd that he would write it in the title of a blog post meant to be read by thousands of strangers. It's like shouting some bit of raillery at your friend across a crowded public plaza.