Well digger's what?

Ever heard the phrase "colder than a well digger's butt"? My mother used to say that every time it got cold enough to chill her bones. Since there wasn't a lot of meat on her bones, anything 40 or below was such a temperature. I live in Florida, and have Floridian blood and not much meat on my bones. So, what would this cold Floridian be doing at 2 in the morning besides blogging and waiting for the mini-human to demand milk? Knitting herself another scarf because she can't find the black one she knitted herself over a year ago-maybe two years. I know it was at least that long ago, because I had it on my birthday trip to Disney, and that was in January of last year. I recently got a random skein of yarn from someone, and since it's soft and not a horrid color, and a single 50 gram ball of yarn only goes so far - I decided I needed a new scarf. Plus it's freaking cold here. It's not getting any higher than mid 40s this week during the day, and down into the 20s at night.
I'm very grateful this weather held off till after the Gator Bowl. Someone gave Beast tickets but he decided he didn't want to go, so he offered them to me and my brother. He's a Gator fan like Devildog, and my brother and I are Seminole fans. I don't know that I would have gone if the temperatures were this miserable-for-Florida low. I'm wondering what it's going to be like on my birthday. Last year was *supposed* to be in the 60s, but the cold front got stalled over us and my freshly impregnated self was miserably cold at Disney.

Side note about the game...my brother was in awe of it all, as it was his first FSU game ever. The shuttle bus had 80% FSU fans and 20% WVU fans. My brother and his goofy self came up with a little ditty he kept singing all afternoon.

"Hush, hush, what's the fuss?
Mountaineers to the back of the bus"

With these temperatures, the Mountaineers would feel right at home, and probably wouldn't call it well digger's butt cold. Plus mines get colder than wells anyway.