Dear BP,
I will never cease to repeat that, with anal, almost anything goes until you use enough LUBE and have enough WARM-UP.

As long as you are enjoying the experience, everything is fine. Once the discomfort starts, it's better to stop, take a step back and rethink your routine.

Our bodies are capable of beautiful things, and taking in exceedingly large dildos is just one of them. But you can never forget that anal requires extensive foreplay and as much lube as you can get your hands on.

And one more thing. You are always telling us how your girlfriend is pitching those ideas about oversized toys. How about sharing with her what would you like to try? It may not necessarily be big willies, maybe, you're more into girthy plugs? It's just an idea, really, and I'm deeply sorry if I'm not in my place to speak.