Gearing this more towards the fellow guys (or girls) with strictly big-dick fetishes as opposed to gay/bi men though I certainly welcome their input also!

For me it was when i snuck a Peter North/Christy Canyon porn from moms closet when i was umm.. Very young (wont specify age, to keep in accordance with the rules lol) I just remember being in awe of the size of his penis and the size of her tits (and the size of that creamy load shooting out when he finished. WTF was that white stuff?! i asked myself lol)

Years later in my teens we had a next door neighbor, tall lanky guy in his 40s with a swimmers build. He’d always be outside or working on his garden in biker shorts/speedos type stuff. Huge bulge. The neighborhood moms were big fans (including mine lol) and I’m pretty sure he was bi. He used to pay me a few bucks to help clean his gutters and one day he was wearing loose n very short basketball shorts, while he was on the ladder I got a good view of his dick and immediately got horny as fuck. That was the first time I legit had the urge to suck a dick