Did you know there's such a thing as a low-histimine diet? That things like any fermented product (pickles, vinegars, wine) contain histimine, and also fish, like tuna? Spinach and eggplant?http://urticaria.thunderworksinc.com/pages/lowhistamine.htm#foodsource
Swiss cheese and certain fish make my mom's mouth feel itchy -- I have other foods that have the same effect. I've heard people say that about eggplant. I wonder if it's a matter of which foods you're picking up on the histamine in.
My turtle does this all the time. I'm fairly certain that they are the dumbest members of the animal kingdom.
Ha! I'm definitely not high right now, and this made me laugh all over again.