OK, childish and kinda gross but seeing a horse peeing is kinda impressive
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/15376240@N00">Joshua Ganderson</a>
CC BY 2.0
<a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a>: <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/15376240@N00/3461907398">DSC_8171</a>