My husband always gets rock hard. Sometimes when the foreplay is very intense its thicker and harder to get my mouth over the head. When i get on top to put him inside, i have to reposition myself because it is a little longer. How much longer i dont know, but the length of my legs are the same and i can usually hover enough above him when i'm on top to get him in. But when he is a little bigger i have to recalibrate how im going to hover above it because resting on my knees makes him too long.