I thought it was from Dusk Til Dawn, when Clooney kidnaps the preacher and kiddos.
I could be wrong, it's been about 8 years since I've seen Reservoir Dogs. I definitely don't hear Clooney's voice when I read those words, though. It sounds more like that guy who played Joe in from Reservoir dogs.
Both being Tarantino films, it could very well be in both. It's been a lot longer since I've seen Dusk till dawn though and I just don't remember much of it.