I've been searching for 2hrs now and can't find the post that mentioned underwear that is seamed like bike shorts. All the search results are from UN yelling at people for wearing underwear under bikeshorts.
I'm in the market for new guchhies so I was going to give them a try. Oh yeah for Guys....

"guchhies"? "UN yelling"?

Anyway, I haven't yet seen underwear that is truly seamed like bike shorts; their panels almost always meet at the 'taint, right where you'd sit on them on a bike saddle. I have some spandex boxer briefs that used to be sold at Target that are about as seamless as you'll find, and Under Armour briefs are pretty close.

I'll keep watching this thread myself for some better options.

WalMart in the regular underwear section. About $10 a pair. You might have to ask, as they usually hide them.

UN ----Underwear Nazi his claim not mine

REI has bike specific underwear with a cycling pad. Available in mens and womens designs, either short almost Jockey brief leg length or longer boxer leg length.

I have not checked construction details and cut but REI stuff is usually good quality.