Hung Like A Horse. The word is often part of colourful comparisons such as hung like a horse/bull/jack donkey or, alternatively, hung like a fieldmouse. You’re, hung like a horse!" Usually said,because most horse have big cocks.
Hung Like A Horse GIFs - Find & Share on GIPHY
Hung Like A Horse GIFs - Find & Share on GIPHY (Shane Stevens) A coarse euphemism which is probably Victorian, perhaps older. With Tenor, maker of GIF Keyboard, add popular Hung Like A Horse animated GIFs to your conversations.