Right I'll get this off my chest here's a story. My bestmate is my neighbour who lives opposite me we've been friends forever and our dad's have a good relationship, anyway I've seen my dad naked many times (he's one of those football lad types in his late 40s) and his cock is average, nothing to boast about. However my friends dad is a whole other story, hes a mechanic in his mid sixties bald slimish but has muscle definition, hes a quite commanding sternfaced alpha type and my dad is a sporty laidback funny guy. I first saw my neighbours dad naked when I was only young playing in the front garden he was standing by his window hands on his hips with the biggest swinging cock I've ever seen, a decade later I told my friend this and he confirmed his dad has a huge cock and that he'd also seen my dad naked and teased me over the size difference. Now me and my mate and our dad's go to the same gym and while me and my mate shower at home our dad's use the gym showers, we've both caught glimpses in there now and then and it's your typical straight men smacking each others arses and windmilling their cocks laddy banter, but alas the gym trainer at the gym whose a cocky loudmouth extrevert with no shame (tbf he's also got a big thick cock with large balls) who one day decided that every one in the gym needed to know about our dad's cocks and how they stacked up (I think he wanted too embarrass me and my mate) he shouted out loud so the whole gym could hear about how my dad had a tiny cock the size of an eraser and my neighbours cock would swallow it for breakfast and that it was almost 3 times the size flaccid, this got a good reception with everyone laughing including my friends dad who laughed the loudest and even agreed my dad one the other hand was blushing red and tried to laugh it off.its sort become a running joke at the gym to laugh at my dad cock and marvel at the size of my neighbours dad's huge intimidating penis, but it all went too far when me and my mate went into the changing room to grab our bags when our dad's walked out of the shower cubicle together with the cocky trainer who saw this as the perfect opportunity to humiliate me and my dad more by coercing our dad's to drop their towels in front of us which my dad reluctantly did but my neighbour had built up a quite an inflated ego at this point and gladly did it with a smirk on his face. We stood there for what felt like an eternity while the trainer erupted into laughter and my elderly neighbour finally looked at me with a smug grin and lampooned me with a snarky remark "you're mother had the same reaction".