The way they talk about it, chicks are either tight or not. I guess depth is less of a priority.

Makes me wonder if "hitting the wall" is a turn-on for guys...

Im thinking it depends on her reaction to hitting said wall.

Well, 10 inches is one thing... Probably manageable, but how do you keep it up there is what I'm wondering... <?> 10cm is probably around 6in, right? Anyhow, it just makes more sense... You could fit the grenade and a small amount of pot in a canister that size..

Kegel Exercises

That was my answer.

Or lots of practice with ben wah balls.

BenWa balls - one things. Solid 10 inch object with a 4 inch diameter? This is no anus we're talking about here. Does anyone know how deep the average vagina is? I bet I can google it.

Average Vagina Size
3 inches along the posterior wall with a diameter of 0.8 inches, though in stimulated phase it balloons to 3.75-4.1 in long by 2.3-2.5 inches in diameter.




.......... that was quick

Source

Why does this seem to have the makings of a signature line? :D

I'll never know