I've had this several times here in Toronto (countless times in Thailand), but the standout experience was wicked ol Sasha who used to work out of a basement at Dupont and Bathurst. I 'm dating myself, but it was one of the most intense experiences of my life. I recall starting to turn around to high tail it back to my car when I got my first look at her. She was a chubby bottle blond latina pushing 50 when I saw her. Whorish makeup, dress too tight and riding up her thighs...but the apartment was clean. She told me if I stayed she'd give me the best blowjob of my life and choke on my cock till I came. She wasn't lying. The way she went at my dick like a starving animal was just primitive. After 10 seconds she had slobbered it with a thick coating of saliva and was burying her face into my crotch. It was the first time I felt the head of my dick bulging a throat, best feeling in the world. When she came up for air her black mascara was running down her face and she was heaving for breath. I asked if she was ok and she smiled weakly and said "more". I think I lost it a bit then. I grabbed her head with both hands and shoved her mouth down on my cock, then wrapped her head with my forearms around the back of her head and pumped her face. Man could she take it. I stopped once, but she told me not to stop unless she pinched my ass. She never did. When I came, I felt like I was passing organs through my dick it was so powerful.
I've had raw bestial bbjs like that since, and perhaps even better ones...but that was fucking memorable.