"Let's not look gift horses in mouths."
I don't think this is the case of looking a gift horse in the mouth. More like looking a gift horse's patoot in the mouth. And in case you have forgotten what the definition of the mouth of a horse's patoot, consider the following:
mouth: n. pl. mouths (mouthz)
1. d. The opening to any cavity or canal in an organ or a bodily part.
Source: The American Heritage® Dictionary of the English Language, Fourth Edition
LOL!