While in the car going somewhere my daughter wanted to make pig noises at the next person that came by and low and behold up ahead I seen a rather large lady and I told her no she can not make pig noises at people because it's a way of calling someone fat. So she asked me what about barking and I told her no because that is a way of calling someone ugly. Then she asked about making horse noises, again calling someone ugly. What about meowing. I told her as long as she wasn't hissing at someone I couldn't think of anything that it would refer to.