A daddy who gives me a throb in my lower regions.

Looks like an assembling prior to a public (men only?) run-in-the buff, cocks and balls soon to be a-swinging and a-bouncing wholesale with gay abandon. 
I find this furry daddy in front as hot as fuck, with a face just pleading to be sat on and, at a shrewd guess, with a furry, tasty bum needing somewhere warm and spitty to plonk itself down on - and it just so happens that I've........😄

More public boners.

(Taken at some Pride event, probably San Fran?) 
If it's something they've just seen which has  caused them to be 'stimulated' them there's no doubt which of them is the greater impressed.

Standing out in a crowd.

The only reasons for why he's doing this that I can come up with is that either he's feeling randy and he's very brave (and pissed? - though his standing straight doesn't suggest it) - or it's some sort of a dare or forfeit (in either case it being fortuitous that he's evidently getting a great kick out of it, possibly on the very brink of 'eruption' without even touching). Just being naked by itself would have attracted some attention, but so publicly sporting a boner has made him a crowd-puller with several cameras out. Hope he achieves whatever it is he wants before the cops come and put a spoilsporting end to his 'fun' - or whatever it is.

An easy choice.

Just as well that I find the centre one here the most attractive. Though I do like a lot the daddy on the left with his good looks and fine hooded cock, his value is a bit reduced by both his tats and that ring around his cock and balls. As for the guy on the right, I've never liked metal piercings anywhere on anyone I'm having sex with, especially on somewhere where I'm likely to break a tooth or two. And is that ring removed whenever he wants to fuck anyone? Can it be taken off easily, leaving, presumably, two unsightly holes in the cockhead? (Shudder!) No, without hesitation I'll settle for young hottie in the middle.