I am 7 inches but my wife has always said I measure it wrongly and she'd say it's bigger. Hard to say what her biggest is - she used to work as part-time ...... so has fucked a large number in her time. She reckons at least 10inches, but I know she can exaggerate on these things. We did an experiment where I asked her to judge against a range of dildos. We do this still, whenever she has a new guy. Best I can estimate on this basis is at prob a 8-9 incher. Most were seemingly 5-6ins.