There isn't, but being a female I try to stand as much as possible in public restrooms when there isn't a disposable seat cover available. Also acquired some practice after many trips to Japan, where often the only toilets available are "traditional" ceramic holes on the floor, requiring one to squat always. It's great toning for the legs

Unfortunately, the issue here was not the toilet seat but the entire floor of the lav. I can pee standing up, but I can't levitate.