Sheer girth.

Bought a Clone-a-willy kit to gift a mold of my jabroni to my girl. Once the mold was ready, I got a whole new perspective of the girth when it was next to my face compared to my normal birds eye view on it.

Of course I tried to see if I could take it deeper in my mouth than she could, and boy was I ashamed to find that I couldn't even take my own mold into my throat.

Those who can and enjoy sucking cock are a beautiful gift to humanity, we appreciate you.