My rooster... 'finishes' EVERY time I pick him up.

(This will be my first post here, apologies if it violates any guidlines. I did read the rules.)

Exactly as stated. I have a somewhat young male Bielefelder Kennhuhn without any hens (we were supposed to just be letting him shelter here temporarily after we saved him, but the person that was supposed to be his new owner soon ghosted us... and it isn't even the first time that's happened, lol) who seemingly has erogenous zones located on his legs. I can't really cuddle with him like I do the other chickens because of this.

I've had pent-up, overly exciteable roosters fall in love with me, and I've had roosters that would jump up in my hair and try to go to town any time they see an opportunity. But this one literally orgasms the second I pick him up in my arms. If you touch his legs at all, he finishes. It doesn't matter if he was trying to mate/showing flirtatious behavior beforehand, it just happens. One hump, fluid goes everywhere (often on ME), then he's back to normal. He starts following me around everywhere for about 30 minutes afterwards. Probably not a health concern, but I'm just curious if anyone else has had a rooster like this? Is it just a breed thing? He's the only bielefelder I've ever had.

Again, sorry if this is a weird post.

Edit: for a little more context, we have plenty of other chickens, but they're all bantams. He is still three times bigger than even our largest hen, and he was already really rough with hens in his prior home (rough enough that this is actually the sole reason his prior owners dumped him), despite them being much closer to him in size. We really can't store or take care of any more animals, and we're currently still trying to find a good home for him. But we can't really get any more hens. He wasn't even supposed to have lived with us as long as he has been, his supposed-to-be owner ghosted us half a year ago, and any time we find a new suitable candidate, they hit us with the "we're on our way right now!", then just... never come over or contact us again. And no, I'm not going to kill him, ever.