nature calling

So I'm waiting here at home for my landlady to meet me outside (she lives 30 feet away) when she calls me up to tell me, "Change in plans.... Nature has called me urgently & I don't know how long I'll be. Can I just knock on your door in a few minutes?" Nature has called her urgently? What on earth? Did she seriously just tell me that she has to take a shit? Wow...California....