When my wife was with 18 & 19 y/o it wasn’t a big deal. The 68 y/o however was bigger (for sure) and idk why he couldn’t get it in her. Idk if she was moving back too much because of the size, or if he was literally just to big to fit. He was able to get the head in and maybe another inch but no more. Anybody had this happen? She had to blow him which was nice, but all three of us were a bit bummed. Only a bit though lol