>>76522
One of my cousins, who I'll name Jake for now. Really nice guy, fair-haired, just under six feet tall, athletic build (he does a lot of running).
I visited Jake and some of the family over in Australia a few years back, in 2019...he'd have been around 20 by that point. We met for a drink round at his flat, catching up, having a laugh, etc, just us two and his sister (my other cousin... let's call her Sandy, who was about 22, same as me). I was sat on the sofa with Jake, Sandy was sat on the other.
At one point Sandy was telling us about some tattoo that she got on her ankle after being told it was dumb to get it done on the sole of her foot...Jake shivered at this and said he'd hate that.
I would have let this comment slide but I remembered tickling him very briefly previously, maybe 6/7 years before, and how he'd freaked out back then. I innocently asked, "why's that?" and, before he could answer, I slowly dragged a finger along his right socked sole, which was facing me as he'd raised it onto the sofa; he yelped and pulled his leg back instinctively. Apparently Sandy was on the same wavelength as me as she approached with a mischievous grin on her face.
Well, one thing led to another, and seconds later, we'd torn off his socks and I had his ankles pinned, gently pulling his toes back while Sandy tickled the crap out of his surprisingly soft soles while he pounded on my back. You know sometimes they just giggle, or laugh intermittently in-between struggles? Nope. I hadn't remembered him being so ticklish but he was putting out loud, deep-belly laughs the whole time, his eyes screwed up sometimes and his mouth was wide open as Sandy went to work on his feet. It only went on for 25-30 seconds but it was enough to leave him red in the face by the end of it.
Anyway, that was the end of it, we didn't mention it much after and we had a really fun evening together. I have a few guy (and girl) friends who come close but don't know anyone quite as ticklish as Jake.