Classic Calvin Klein Briefs - with a double layer and "quick access" opening pocket (which I presume was to let a bit of ventilation) in the groin area - all packaged (pardon the pun) in highly presentable design lines
So here are my underwear choices (with a few brand lusts):
This is where we all start (post diapers, ofcourse)... the briefs, but this in no way suggests you should wear the same design you did when you were 3 years old - you know: elastic cotton briefs and sagging because there's little flesh to fill the room (those are hideous!), grow into the more fitted ones with extra cushioning, where you need it, and air pockets and the gorgeous crotch-finished design. The ones above are by AussieBum and they makes DeGorgeous underwear in different cuts, fabric and colours - but stick to cotton (it's cool, as in lets air in, - last thing you need are moist loins!) and colours that are easy on the eye: nudes, whites, blacks or mono-coloured ones (with clean finishes).
On the downside: the VPL (VUL just sounds wrong, so we'll borrow this term from the girls) on these is nasty - so thick material pants are your only option (think jeans).
Favoured by many who have self-named themselves after some gangster/rapper or usually have "DJ" preceding their corny vinyl/music-derived name, Dj Scratchy or whatever. These give a fantastic hanging room *giggles* and can only really be worn with loose garments - think your lounging pants. (I will not even raise the pants to the knees which underwear to pick because that's just nasty to see!)
But the mistake "Dj Scratchy" and his friends make is that they think looney tunes characters need to adorn their, usually, satin boxers. (Please note the number of errors in that sentence): Yes, it's cute to have everyone believe you still have a soft spot for cartoon characters but when refering to underwear, soft spot is rarely the term we should be using to describe a man's undies... and satin for daily wear? I do not know what damp swamp you're aiming for but humid spells breeding ground for microbes so steer clear I would say, steer clear of the heat conserving, moisture-retaining satin undies for daywear (especially in summer). With that said - a little satin Boyingerie number, with tasteful detail (or none ideally - arrow-through-the-heart prints are just tacky) and in one solid colour a la the CK ones above - yes, this is a CK advert, lol!
On the downside: limits what you can wear... meggings/mannings/male leggings and boxers won't make a pretty sight!
The controversial male-thong... great for hiding VPLs, keeps the boys downstairs in one place and if the perfect (almost snug) fit is used, the world's your oyster when it comes to selecting an outfit. I would avoid the animal prints (blerggh!) or ones with woo many patterns/detailings/tassles on them (unless you are... actually, avoid regardless of situation)
downside: I guess I watch too much TV and from all the comedies and trash-TV that I have encountered, I say: double-ply toilet paper and do a good job! Doubt if anyone wants to see a plumbers cleavage with these on (or ever actually!)
The boxer briefs (and my personal favourites):
These answer all the downside questions! They are roomy, comfy, have no VPL, have some kind of air-ventilation technology and I particularly love the seamless ones that Ralph Lauren did (spoilt myself to those).
Downside: no double-layered groin cushioning, but I do not plan to baseball so there goes that downside. These score ten-out-of-ten.
Absurd underwear which have no explanation:
Then again, several gay men might say otherwise...