['An ex girlfriend of mine was in a bind and needed a place to stay.  She repaid me by wetting the bed last night.']
Oh wow.... a grown woman wetting the bed? Does she do it on purpose?
An ex girlfriend asked is she could spend the night at my house because she was kicked out of her current home.  In the middle of the night, I woke up because she had wet the bed.  She's 40!