Ugh. You sound like my wife recently. Thursday night she made some pasta. I noticed that it was a vegetarian meal (she often does these things lately to eat healthier), but then when I packed up the leftovers I discovered there was also meat in it as well -- it just so randomly happened that my portion had no meat (so much for diffusion).
Within an hour she was a human lawn sprinkler out of both ends. I was unaffected.
Bizarre, really. Naturally to say, I think it was the meat.