Had a wonderful experience last night
Was perusing Craigslist for something to do and came across "Sniff my GF's panties while I give you a no-strings BJ". That sounded intriguing so after a couple emails, we made plans.
I got there around 9:00, to his apartment in the city. He had his computer hooked up to the big screen with porn playing, and offered me a beer while we "warmed up". He explained that this is something he does when his girlfriend goes out of town (she was at a wedding this weekend, but he couldn't go because of work). When answering the ad, I was skeptical, but when I got there there were enough pictures of him with a woman to sell it. She knows he's bi, but doesn't know he's "actively" bi.
We watched porn for about 15-20 minutes, and eventually started jerking off together. He was eyeing my crotch, and said, "come on, let's go get you some panties".
AN ASIDE: I've never been huge into the panty-sniffing thing. When I was younger I did it once in a while (yeah, gross, with my mother's or sister's, I know), and then a couple times in college as well, swiping from the dirty laundry of girls I know. It's not a huge turn-on, but it can be nice.
Unfortunately, she didn't have any of the satiny, silky kind I prefer - the options were various cotton styles, and some thongs. I chose a multi-colored full-back cotton pair. I laid back, put them to my nose and inhaled deeply while he went to work. The scent was nice, fairly fresh, and he was fantastic. He had a good feel for where I was in the process and definitely held me off from cumming a couple times. When it was time, he took me all the way into his mouth, and didn't lose a drop. He was stroking himself the entire time, and shot his load immediately after I did.
When we were done, we engaged in the awkward activities of bi guys who consider themselves mostly straight by cleaning up, having another beer, checking football scores etc. (it's rude to just leave, of course). I thanked him for his service, and told him I'd probably be in touch again, so he's going to keep me in the loop for when she's out of town.