There's a fine line between a sweet moment and a FILTHY one.

The website Awkward Family Photos put up a picture on Instagram of an engagement gift...that accidentally turned out X-rated.

It happened when one of the couple's moms took the proposal photo and had it turned into a small gold sculpture. But...because of the way the guy's arm is positioned, and because the sculpture just shows his silhouette, his arm doesn't look like an arm. It looks like, well, the dude is hung like a horse! Whoaaaa Nellie!!!

Imagine explaining this one to your mom...
You - "Ya see Mom, there's a problem with sculpture"...
Mom - "What's wrong with it honey?"...
You - "Look closer"...
Mom - "I don't see anything wrong"...
You - (growing frustrated) "Mom, his arm looks like a giant Pe..."...(she interrupts you quickly)
Mom - (blushing) Ohhhh...well he is his father's son...
You - MOM STOPPPPP....."TMI!!!"....

Anyway, we're guessing the bride-to-be's answer was a resounding "YES"!!!

Instagram